19622720

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:172

約数の個数: 112

約数和(自身を含む): 51846480

約数和(自身を除く): 32223760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 53, 64, 65, 80, 89, 104, 106, 130, 160, 178, 208, 212, 260, 265, 320, 356, 416, 424, 445, 520, 530, 689, 712, 832, 848, 890, 1040, 1060, 1157, 1378, 1424, 1696, 1780, 2080, 2120, 2314, 2756, 2848, 3392, 3445, 3560, 4160, 4240, 4628, 4717, 5512, 5696, 5785, 6890, 7120, 8480, 9256, 9434, 11024, 11570, 13780, 14240, 16960, 18512, 18868, 22048, 23140, 23585, 27560, 28480, 37024, 37736, 44096, 46280, 47170, 55120, 61321, 74048, 75472, 92560, 94340, 110240, 122642, 150944, 185120, 188680, 220480, 245284, 301888, 306605, 370240, 377360, 490568, 613210, 754720, 981136, 1226420, 1509440, 1962272, 2452840, 3924544, 4905680, 9811360, 19622720]

約数ペア:

[(1, 19622720), (2, 9811360), (4, 4905680), (5, 3924544), (8, 2452840), (10, 1962272), (13, 1509440), (16, 1226420), (20, 981136), (26, 754720), (32, 613210), (40, 490568), (52, 377360), (53, 370240), (64, 306605), (65, 301888), (80, 245284), (89, 220480), (104, 188680), (106, 185120), (130, 150944), (160, 122642), (178, 110240), (208, 94340), (212, 92560), (260, 75472), (265, 74048), (320, 61321), (356, 55120), (416, 47170), (424, 46280), (445, 44096), (520, 37736), (530, 37024), (689, 28480), (712, 27560), (832, 23585), (848, 23140), (890, 22048), (1040, 18868), (1060, 18512), (1157, 16960), (1378, 14240), (1424, 13780), (1696, 11570), (1780, 11024), (2080, 9434), (2120, 9256), (2314, 8480), (2756, 7120), (2848, 6890), (3392, 5785), (3445, 5696), (3560, 5512), (4160, 4717), (4240, 4628)]