19784960

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:104

約数の個数: 144

約数和(自身を含む): 54084240

約数和(自身を除く): 34299280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 29, 32, 40, 41, 52, 58, 64, 65, 80, 82, 104, 116, 128, 130, 145, 160, 164, 205, 208, 232, 256, 260, 290, 320, 328, 377, 410, 416, 464, 520, 533, 580, 640, 656, 754, 820, 832, 928, 1040, 1066, 1160, 1189, 1280, 1312, 1508, 1640, 1664, 1856, 1885, 2080, 2132, 2320, 2378, 2624, 2665, 3016, 3280, 3328, 3712, 3770, 4160, 4264, 4640, 4756, 5248, 5330, 5945, 6032, 6560, 7424, 7540, 8320, 8528, 9280, 9512, 10496, 10660, 11890, 12064, 13120, 15080, 15457, 16640, 17056, 18560, 19024, 21320, 23780, 24128, 26240, 30160, 30914, 34112, 37120, 38048, 42640, 47560, 48256, 52480, 60320, 61828, 68224, 76096, 77285, 85280, 95120, 96512, 120640, 123656, 136448, 152192, 154570, 170560, 190240, 241280, 247312, 304384, 309140, 341120, 380480, 482560, 494624, 618280, 682240, 760960, 989248, 1236560, 1521920, 1978496, 2473120, 3956992, 4946240, 9892480, 19784960]

約数ペア:

[(1, 19784960), (2, 9892480), (4, 4946240), (5, 3956992), (8, 2473120), (10, 1978496), (13, 1521920), (16, 1236560), (20, 989248), (26, 760960), (29, 682240), (32, 618280), (40, 494624), (41, 482560), (52, 380480), (58, 341120), (64, 309140), (65, 304384), (80, 247312), (82, 241280), (104, 190240), (116, 170560), (128, 154570), (130, 152192), (145, 136448), (160, 123656), (164, 120640), (205, 96512), (208, 95120), (232, 85280), (256, 77285), (260, 76096), (290, 68224), (320, 61828), (328, 60320), (377, 52480), (410, 48256), (416, 47560), (464, 42640), (520, 38048), (533, 37120), (580, 34112), (640, 30914), (656, 30160), (754, 26240), (820, 24128), (832, 23780), (928, 21320), (1040, 19024), (1066, 18560), (1160, 17056), (1189, 16640), (1280, 15457), (1312, 15080), (1508, 13120), (1640, 12064), (1664, 11890), (1856, 10660), (1885, 10496), (2080, 9512), (2132, 9280), (2320, 8528), (2378, 8320), (2624, 7540), (2665, 7424), (3016, 6560), (3280, 6032), (3328, 5945), (3712, 5330), (3770, 5248), (4160, 4756), (4264, 4640)]