20775178840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{10691}}^1$

素因数の和:10853

約数の個数: 128

約数和(自身を含む): 52217161920

約数和(自身を除く): 31441983080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 101, 104, 130, 148, 185, 202, 260, 296, 370, 404, 481, 505, 520, 740, 808, 962, 1010, 1313, 1480, 1924, 2020, 2405, 2626, 3737, 3848, 4040, 4810, 5252, 6565, 7474, 9620, 10504, 10691, 13130, 14948, 18685, 19240, 21382, 26260, 29896, 37370, 42764, 48581, 52520, 53455, 74740, 85528, 97162, 106910, 138983, 149480, 194324, 213820, 242905, 277966, 388648, 395567, 427640, 485810, 555932, 694915, 791134, 971620, 1079791, 1111864, 1389830, 1582268, 1943240, 1977835, 2159582, 2779660, 3164536, 3955670, 4319164, 5142371, 5398955, 5559320, 7911340, 8638328, 10284742, 10797910, 14037283, 15822680, 20569484, 21595820, 25711855, 28074566, 39952267, 41138968, 43191640, 51423710, 56149132, 70186415, 79904534, 102847420, 112298264, 140372830, 159809068, 199761335, 205694840, 280745660, 319618136, 399522670, 519379471, 561491320, 799045340, 1038758942, 1598090680, 2077517884, 2596897355, 4155035768, 5193794710, 10387589420, 20775178840]

約数ペア:

[(1, 20775178840), (2, 10387589420), (4, 5193794710), (5, 4155035768), (8, 2596897355), (10, 2077517884), (13, 1598090680), (20, 1038758942), (26, 799045340), (37, 561491320), (40, 519379471), (52, 399522670), (65, 319618136), (74, 280745660), (101, 205694840), (104, 199761335), (130, 159809068), (148, 140372830), (185, 112298264), (202, 102847420), (260, 79904534), (296, 70186415), (370, 56149132), (404, 51423710), (481, 43191640), (505, 41138968), (520, 39952267), (740, 28074566), (808, 25711855), (962, 21595820), (1010, 20569484), (1313, 15822680), (1480, 14037283), (1924, 10797910), (2020, 10284742), (2405, 8638328), (2626, 7911340), (3737, 5559320), (3848, 5398955), (4040, 5142371), (4810, 4319164), (5252, 3955670), (6565, 3164536), (7474, 2779660), (9620, 2159582), (10504, 1977835), (10691, 1943240), (13130, 1582268), (14948, 1389830), (18685, 1111864), (19240, 1079791), (21382, 971620), (26260, 791134), (29896, 694915), (37370, 555932), (42764, 485810), (48581, 427640), (52520, 395567), (53455, 388648), (74740, 277966), (85528, 242905), (97162, 213820), (106910, 194324), (138983, 149480)]