20157323440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{427787}}^1$

素因数の和:427850

約数の個数: 80

約数和(自身を含む): 50923883520

約数和(自身を除く): 30766560080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 380, 496, 589, 620, 760, 1178, 1240, 1520, 2356, 2480, 2945, 4712, 5890, 9424, 11780, 23560, 47120, 427787, 855574, 1711148, 2138935, 3422296, 4277870, 6844592, 8127953, 8555740, 13261397, 16255906, 17111480, 26522794, 32511812, 34222960, 40639765, 53045588, 65023624, 66306985, 81279530, 106091176, 130047248, 132613970, 162559060, 212182352, 251966543, 265227940, 325118120, 503933086, 530455880, 650236240, 1007866172, 1060911760, 1259832715, 2015732344, 2519665430, 4031464688, 5039330860, 10078661720, 20157323440]

約数ペア:

[(1, 20157323440), (2, 10078661720), (4, 5039330860), (5, 4031464688), (8, 2519665430), (10, 2015732344), (16, 1259832715), (19, 1060911760), (20, 1007866172), (31, 650236240), (38, 530455880), (40, 503933086), (62, 325118120), (76, 265227940), (80, 251966543), (95, 212182352), (124, 162559060), (152, 132613970), (155, 130047248), (190, 106091176), (248, 81279530), (304, 66306985), (310, 65023624), (380, 53045588), (496, 40639765), (589, 34222960), (620, 32511812), (760, 26522794), (1178, 17111480), (1240, 16255906), (1520, 13261397), (2356, 8555740), (2480, 8127953), (2945, 6844592), (4712, 4277870), (5890, 3422296), (9424, 2138935), (11780, 1711148), (23560, 855574), (47120, 427787)]