20187457940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{397}}^1\times {\mathrm{761}}^1$

素因数の和:1437

約数の個数: 96

約数和(自身を含む): 46008182304

約数和(自身を除く): 25820724364

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 257, 260, 397, 514, 761, 794, 1028, 1285, 1522, 1588, 1985, 2570, 3044, 3341, 3805, 3970, 5140, 5161, 6682, 7610, 7940, 9893, 10322, 13364, 15220, 16705, 19786, 20644, 25805, 33410, 39572, 49465, 51610, 66820, 98930, 102029, 103220, 195577, 197860, 204058, 302117, 391154, 408116, 510145, 604234, 782308, 977885, 1020290, 1208468, 1326377, 1510585, 1955770, 2040580, 2542501, 2652754, 3021170, 3911540, 3927521, 5085002, 5305508, 6042340, 6631885, 7855042, 10170004, 12712505, 13263770, 15710084, 19637605, 25425010, 26527540, 39275210, 50850020, 77644069, 78550420, 155288138, 310576276, 388220345, 776440690, 1009372897, 1552881380, 2018745794, 4037491588, 5046864485, 10093728970, 20187457940]

約数ペア:

[(1, 20187457940), (2, 10093728970), (4, 5046864485), (5, 4037491588), (10, 2018745794), (13, 1552881380), (20, 1009372897), (26, 776440690), (52, 388220345), (65, 310576276), (130, 155288138), (257, 78550420), (260, 77644069), (397, 50850020), (514, 39275210), (761, 26527540), (794, 25425010), (1028, 19637605), (1285, 15710084), (1522, 13263770), (1588, 12712505), (1985, 10170004), (2570, 7855042), (3044, 6631885), (3341, 6042340), (3805, 5305508), (3970, 5085002), (5140, 3927521), (5161, 3911540), (6682, 3021170), (7610, 2652754), (7940, 2542501), (9893, 2040580), (10322, 1955770), (13364, 1510585), (15220, 1326377), (16705, 1208468), (19786, 1020290), (20644, 977885), (25805, 782308), (33410, 604234), (39572, 510145), (49465, 408116), (51610, 391154), (66820, 302117), (98930, 204058), (102029, 197860), (103220, 195577)]