20760400

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:149

約数の個数: 120

約数和(自身を含む): 54800064

約数和(自身を除く): 34039664

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 43, 50, 68, 71, 80, 85, 86, 100, 136, 142, 170, 172, 200, 215, 272, 284, 340, 344, 355, 400, 425, 430, 568, 680, 688, 710, 731, 850, 860, 1075, 1136, 1207, 1360, 1420, 1462, 1700, 1720, 1775, 2150, 2414, 2840, 2924, 3053, 3400, 3440, 3550, 3655, 4300, 4828, 5680, 5848, 6035, 6106, 6800, 7100, 7310, 8600, 9656, 11696, 12070, 12212, 14200, 14620, 15265, 17200, 18275, 19312, 24140, 24424, 28400, 29240, 30175, 30530, 36550, 48280, 48848, 51901, 58480, 60350, 61060, 73100, 76325, 96560, 103802, 120700, 122120, 146200, 152650, 207604, 241400, 244240, 259505, 292400, 305300, 415208, 482800, 519010, 610600, 830416, 1038020, 1221200, 1297525, 2076040, 2595050, 4152080, 5190100, 10380200, 20760400]

約数ペア:

[(1, 20760400), (2, 10380200), (4, 5190100), (5, 4152080), (8, 2595050), (10, 2076040), (16, 1297525), (17, 1221200), (20, 1038020), (25, 830416), (34, 610600), (40, 519010), (43, 482800), (50, 415208), (68, 305300), (71, 292400), (80, 259505), (85, 244240), (86, 241400), (100, 207604), (136, 152650), (142, 146200), (170, 122120), (172, 120700), (200, 103802), (215, 96560), (272, 76325), (284, 73100), (340, 61060), (344, 60350), (355, 58480), (400, 51901), (425, 48848), (430, 48280), (568, 36550), (680, 30530), (688, 30175), (710, 29240), (731, 28400), (850, 24424), (860, 24140), (1075, 19312), (1136, 18275), (1207, 17200), (1360, 15265), (1420, 14620), (1462, 14200), (1700, 12212), (1720, 12070), (1775, 11696), (2150, 9656), (2414, 8600), (2840, 7310), (2924, 7100), (3053, 6800), (3400, 6106), (3440, 6035), (3550, 5848), (3655, 5680), (4300, 4828)]