20829830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 45895680

約数和(自身を除く): 25065850

約数列:

[1, 2, 5, 7, 10, 14, 29, 31, 35, 58, 62, 70, 145, 155, 203, 217, 290, 310, 331, 406, 434, 662, 899, 1015, 1085, 1655, 1798, 2030, 2170, 2317, 3310, 4495, 4634, 6293, 8990, 9599, 10261, 11585, 12586, 19198, 20522, 23170, 31465, 47995, 51305, 62930, 67193, 71827, 95990, 102610, 134386, 143654, 297569, 335965, 359135, 595138, 671930, 718270, 1487845, 2082983, 2975690, 4165966, 10414915, 20829830]

約数ペア:

[(1, 20829830), (2, 10414915), (5, 4165966), (7, 2975690), (10, 2082983), (14, 1487845), (29, 718270), (31, 671930), (35, 595138), (58, 359135), (62, 335965), (70, 297569), (145, 143654), (155, 134386), (203, 102610), (217, 95990), (290, 71827), (310, 67193), (331, 62930), (406, 51305), (434, 47995), (662, 31465), (899, 23170), (1015, 20522), (1085, 19198), (1655, 12586), (1798, 11585), (2030, 10261), (2170, 9599), (2317, 8990), (3310, 6293), (4495, 4634)]