20199400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{457}}^1$

素因数の和:503

約数の個数: 96

約数和(自身を含む): 53668440

約数和(自身を除く): 33469040

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 25, 26, 34, 40, 50, 52, 65, 68, 85, 100, 104, 130, 136, 170, 200, 221, 260, 325, 340, 425, 442, 457, 520, 650, 680, 850, 884, 914, 1105, 1300, 1700, 1768, 1828, 2210, 2285, 2600, 3400, 3656, 4420, 4570, 5525, 5941, 7769, 8840, 9140, 11050, 11425, 11882, 15538, 18280, 22100, 22850, 23764, 29705, 31076, 38845, 44200, 45700, 47528, 59410, 62152, 77690, 91400, 100997, 118820, 148525, 155380, 194225, 201994, 237640, 297050, 310760, 388450, 403988, 504985, 594100, 776900, 807976, 1009970, 1188200, 1553800, 2019940, 2524925, 4039880, 5049850, 10099700, 20199400]

約数ペア:

[(1, 20199400), (2, 10099700), (4, 5049850), (5, 4039880), (8, 2524925), (10, 2019940), (13, 1553800), (17, 1188200), (20, 1009970), (25, 807976), (26, 776900), (34, 594100), (40, 504985), (50, 403988), (52, 388450), (65, 310760), (68, 297050), (85, 237640), (100, 201994), (104, 194225), (130, 155380), (136, 148525), (170, 118820), (200, 100997), (221, 91400), (260, 77690), (325, 62152), (340, 59410), (425, 47528), (442, 45700), (457, 44200), (520, 38845), (650, 31076), (680, 29705), (850, 23764), (884, 22850), (914, 22100), (1105, 18280), (1300, 15538), (1700, 11882), (1768, 11425), (1828, 11050), (2210, 9140), (2285, 8840), (2600, 7769), (3400, 5941), (3656, 5525), (4420, 4570)]