20892972040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{9689}}^1$

素因数の和:9815

約数の個数: 128

約数和(自身を含む): 50902732800

約数和(自身を除く): 30009760760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 47, 62, 74, 94, 124, 148, 155, 185, 188, 235, 248, 296, 310, 370, 376, 470, 620, 740, 940, 1147, 1240, 1457, 1480, 1739, 1880, 2294, 2914, 3478, 4588, 5735, 5828, 6956, 7285, 8695, 9176, 9689, 11470, 11656, 13912, 14570, 17390, 19378, 22940, 29140, 34780, 38756, 45880, 48445, 53909, 58280, 69560, 77512, 96890, 107818, 193780, 215636, 269545, 300359, 358493, 387560, 431272, 455383, 539090, 600718, 716986, 910766, 1078180, 1201436, 1433972, 1501795, 1792465, 1821532, 2156360, 2276915, 2402872, 2867944, 3003590, 3584930, 3643064, 4553830, 6007180, 7169860, 9107660, 11113283, 12014360, 14116873, 14339720, 16849171, 18215320, 22226566, 28233746, 33698342, 44453132, 55566415, 56467492, 67396684, 70584365, 84245855, 88906264, 111132830, 112934984, 134793368, 141168730, 168491710, 222265660, 282337460, 336983420, 444531320, 522324301, 564674920, 673966840, 1044648602, 2089297204, 2611621505, 4178594408, 5223243010, 10446486020, 20892972040]

約数ペア:

[(1, 20892972040), (2, 10446486020), (4, 5223243010), (5, 4178594408), (8, 2611621505), (10, 2089297204), (20, 1044648602), (31, 673966840), (37, 564674920), (40, 522324301), (47, 444531320), (62, 336983420), (74, 282337460), (94, 222265660), (124, 168491710), (148, 141168730), (155, 134793368), (185, 112934984), (188, 111132830), (235, 88906264), (248, 84245855), (296, 70584365), (310, 67396684), (370, 56467492), (376, 55566415), (470, 44453132), (620, 33698342), (740, 28233746), (940, 22226566), (1147, 18215320), (1240, 16849171), (1457, 14339720), (1480, 14116873), (1739, 12014360), (1880, 11113283), (2294, 9107660), (2914, 7169860), (3478, 6007180), (4588, 4553830), (5735, 3643064), (5828, 3584930), (6956, 3003590), (7285, 2867944), (8695, 2402872), (9176, 2276915), (9689, 2156360), (11470, 1821532), (11656, 1792465), (13912, 1501795), (14570, 1433972), (17390, 1201436), (19378, 1078180), (22940, 910766), (29140, 716986), (34780, 600718), (38756, 539090), (45880, 455383), (48445, 431272), (53909, 387560), (58280, 358493), (69560, 300359), (77512, 269545), (96890, 215636), (107818, 193780)]