78900400

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{283}}^1$

素因数の和:359

約数の個数: 120

約数和(自身を含む): 206330544

約数和(自身を除く): 127430144

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 41, 50, 68, 80, 82, 85, 100, 136, 164, 170, 200, 205, 272, 283, 328, 340, 400, 410, 425, 566, 656, 680, 697, 820, 850, 1025, 1132, 1360, 1394, 1415, 1640, 1700, 2050, 2264, 2788, 2830, 3280, 3400, 3485, 4100, 4528, 4811, 5576, 5660, 6800, 6970, 7075, 8200, 9622, 11152, 11320, 11603, 13940, 14150, 16400, 17425, 19244, 22640, 23206, 24055, 27880, 28300, 34850, 38488, 46412, 48110, 55760, 56600, 58015, 69700, 76976, 92824, 96220, 113200, 116030, 120275, 139400, 185648, 192440, 197251, 232060, 240550, 278800, 290075, 384880, 394502, 464120, 481100, 580150, 789004, 928240, 962200, 986255, 1160300, 1578008, 1924400, 1972510, 2320600, 3156016, 3945020, 4641200, 4931275, 7890040, 9862550, 15780080, 19725100, 39450200, 78900400]

約数ペア:

[(1, 78900400), (2, 39450200), (4, 19725100), (5, 15780080), (8, 9862550), (10, 7890040), (16, 4931275), (17, 4641200), (20, 3945020), (25, 3156016), (34, 2320600), (40, 1972510), (41, 1924400), (50, 1578008), (68, 1160300), (80, 986255), (82, 962200), (85, 928240), (100, 789004), (136, 580150), (164, 481100), (170, 464120), (200, 394502), (205, 384880), (272, 290075), (283, 278800), (328, 240550), (340, 232060), (400, 197251), (410, 192440), (425, 185648), (566, 139400), (656, 120275), (680, 116030), (697, 113200), (820, 96220), (850, 92824), (1025, 76976), (1132, 69700), (1360, 58015), (1394, 56600), (1415, 55760), (1640, 48110), (1700, 46412), (2050, 38488), (2264, 34850), (2788, 28300), (2830, 27880), (3280, 24055), (3400, 23206), (3485, 22640), (4100, 19244), (4528, 17425), (4811, 16400), (5576, 14150), (5660, 13940), (6800, 11603), (6970, 11320), (7075, 11152), (8200, 9622)]