1656478720

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{607}}^1$

素因数の和:686

約数の個数: 176

約数和(自身を含む): 4390864128

約数和(自身を除く): 2734385408

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 41, 52, 64, 65, 80, 82, 104, 128, 130, 160, 164, 205, 208, 256, 260, 320, 328, 410, 416, 512, 520, 533, 607, 640, 656, 820, 832, 1024, 1040, 1066, 1214, 1280, 1312, 1640, 1664, 2080, 2132, 2428, 2560, 2624, 2665, 3035, 3280, 3328, 4160, 4264, 4856, 5120, 5248, 5330, 6070, 6560, 6656, 7891, 8320, 8528, 9712, 10496, 10660, 12140, 13120, 13312, 15782, 16640, 17056, 19424, 20992, 21320, 24280, 24887, 26240, 31564, 33280, 34112, 38848, 39455, 41984, 42640, 48560, 49774, 52480, 63128, 66560, 68224, 77696, 78910, 85280, 97120, 99548, 104960, 124435, 126256, 136448, 155392, 157820, 170560, 194240, 199096, 209920, 248870, 252512, 272896, 310784, 315640, 323531, 341120, 388480, 398192, 497740, 505024, 545792, 621568, 631280, 647062, 682240, 776960, 796384, 995480, 1010048, 1262560, 1294124, 1364480, 1553920, 1592768, 1617655, 1990960, 2020096, 2525120, 2588248, 2728960, 3107840, 3185536, 3235310, 3981920, 4040192, 5050240, 5176496, 6371072, 6470620, 7963840, 8080384, 10100480, 10352992, 12742144, 12941240, 15927680, 20200960, 20705984, 25484288, 25882480, 31855360, 40401920, 41411968, 51764960, 63710720, 82823936, 103529920, 127421440, 165647872, 207059840, 331295744, 414119680, 828239360, 1656478720]

約数ペア:

[(1, 1656478720), (2, 828239360), (4, 414119680), (5, 331295744), (8, 207059840), (10, 165647872), (13, 127421440), (16, 103529920), (20, 82823936), (26, 63710720), (32, 51764960), (40, 41411968), (41, 40401920), (52, 31855360), (64, 25882480), (65, 25484288), (80, 20705984), (82, 20200960), (104, 15927680), (128, 12941240), (130, 12742144), (160, 10352992), (164, 10100480), (205, 8080384), (208, 7963840), (256, 6470620), (260, 6371072), (320, 5176496), (328, 5050240), (410, 4040192), (416, 3981920), (512, 3235310), (520, 3185536), (533, 3107840), (607, 2728960), (640, 2588248), (656, 2525120), (820, 2020096), (832, 1990960), (1024, 1617655), (1040, 1592768), (1066, 1553920), (1214, 1364480), (1280, 1294124), (1312, 1262560), (1640, 1010048), (1664, 995480), (2080, 796384), (2132, 776960), (2428, 682240), (2560, 647062), (2624, 631280), (2665, 621568), (3035, 545792), (3280, 505024), (3328, 497740), (4160, 398192), (4264, 388480), (4856, 341120), (5120, 323531), (5248, 315640), (5330, 310784), (6070, 272896), (6560, 252512), (6656, 248870), (7891, 209920), (8320, 199096), (8528, 194240), (9712, 170560), (10496, 157820), (10660, 155392), (12140, 136448), (13120, 126256), (13312, 124435), (15782, 104960), (16640, 99548), (17056, 97120), (19424, 85280), (20992, 78910), (21320, 77696), (24280, 68224), (24887, 66560), (26240, 63128), (31564, 52480), (33280, 49774), (34112, 48560), (38848, 42640), (39455, 41984)]