15661736920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{1229}}^1$

素因数の和:1553

約数の個数: 128

約数和(自身を含む): 37407744000

約数和(自身を除く): 21746007080

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 239, 248, 310, 344, 430, 478, 620, 860, 956, 1195, 1229, 1240, 1333, 1720, 1912, 2390, 2458, 2666, 4780, 4916, 5332, 6145, 6665, 7409, 9560, 9832, 10277, 10664, 12290, 13330, 14818, 20554, 24580, 26660, 29636, 37045, 38099, 41108, 49160, 51385, 52847, 53320, 59272, 74090, 76198, 82216, 102770, 105694, 148180, 152396, 190495, 205540, 211388, 264235, 293731, 296360, 304792, 318587, 380990, 411080, 422776, 528470, 587462, 637174, 761980, 1056940, 1174924, 1274348, 1468655, 1523960, 1592935, 1638257, 2113880, 2349848, 2548696, 2937310, 3185870, 3276514, 5874620, 6371740, 6553028, 8191285, 9105661, 11749240, 12630433, 12743480, 13106056, 16382570, 18211322, 25260866, 32765140, 36422644, 45528305, 50521732, 63152165, 65530280, 72845288, 91056610, 101043464, 126304330, 182113220, 252608660, 364226440, 391543423, 505217320, 783086846, 1566173692, 1957717115, 3132347384, 3915434230, 7830868460, 15661736920]

約数ペア:

[(1, 15661736920), (2, 7830868460), (4, 3915434230), (5, 3132347384), (8, 1957717115), (10, 1566173692), (20, 783086846), (31, 505217320), (40, 391543423), (43, 364226440), (62, 252608660), (86, 182113220), (124, 126304330), (155, 101043464), (172, 91056610), (215, 72845288), (239, 65530280), (248, 63152165), (310, 50521732), (344, 45528305), (430, 36422644), (478, 32765140), (620, 25260866), (860, 18211322), (956, 16382570), (1195, 13106056), (1229, 12743480), (1240, 12630433), (1333, 11749240), (1720, 9105661), (1912, 8191285), (2390, 6553028), (2458, 6371740), (2666, 5874620), (4780, 3276514), (4916, 3185870), (5332, 2937310), (6145, 2548696), (6665, 2349848), (7409, 2113880), (9560, 1638257), (9832, 1592935), (10277, 1523960), (10664, 1468655), (12290, 1274348), (13330, 1174924), (14818, 1056940), (20554, 761980), (24580, 637174), (26660, 587462), (29636, 528470), (37045, 422776), (38099, 411080), (41108, 380990), (49160, 318587), (51385, 304792), (52847, 296360), (53320, 293731), (59272, 264235), (74090, 211388), (76198, 205540), (82216, 190495), (102770, 152396), (105694, 148180)]