20656740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{373}}^1$

素因数の和:469

約数の個数: 96

約数和(自身を含む): 63334656

約数和(自身を除く): 42677916

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 71, 78, 130, 142, 156, 195, 213, 260, 284, 355, 373, 390, 426, 710, 746, 780, 852, 923, 1065, 1119, 1420, 1492, 1846, 1865, 2130, 2238, 2769, 3692, 3730, 4260, 4476, 4615, 4849, 5538, 5595, 7460, 9230, 9698, 11076, 11190, 13845, 14547, 18460, 19396, 22380, 24245, 26483, 27690, 29094, 48490, 52966, 55380, 58188, 72735, 79449, 96980, 105932, 132415, 145470, 158898, 264830, 290940, 317796, 344279, 397245, 529660, 688558, 794490, 1032837, 1377116, 1588980, 1721395, 2065674, 3442790, 4131348, 5164185, 6885580, 10328370, 20656740]

約数ペア:

[(1, 20656740), (2, 10328370), (3, 6885580), (4, 5164185), (5, 4131348), (6, 3442790), (10, 2065674), (12, 1721395), (13, 1588980), (15, 1377116), (20, 1032837), (26, 794490), (30, 688558), (39, 529660), (52, 397245), (60, 344279), (65, 317796), (71, 290940), (78, 264830), (130, 158898), (142, 145470), (156, 132415), (195, 105932), (213, 96980), (260, 79449), (284, 72735), (355, 58188), (373, 55380), (390, 52966), (426, 48490), (710, 29094), (746, 27690), (780, 26483), (852, 24245), (923, 22380), (1065, 19396), (1119, 18460), (1420, 14547), (1492, 13845), (1846, 11190), (1865, 11076), (2130, 9698), (2238, 9230), (2769, 7460), (3692, 5595), (3730, 5538), (4260, 4849), (4476, 4615)]