20660220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{863}}^1$

素因数の和:904

約数の個数: 144

約数和(自身を含む): 75479040

約数和(自身を除く): 54818820

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 57, 60, 63, 70, 76, 84, 90, 95, 105, 114, 126, 133, 140, 171, 180, 190, 210, 228, 252, 266, 285, 315, 342, 380, 399, 420, 532, 570, 630, 665, 684, 798, 855, 863, 1140, 1197, 1260, 1330, 1596, 1710, 1726, 1995, 2394, 2589, 2660, 3420, 3452, 3990, 4315, 4788, 5178, 5985, 6041, 7767, 7980, 8630, 10356, 11970, 12082, 12945, 15534, 16397, 17260, 18123, 23940, 24164, 25890, 30205, 31068, 32794, 36246, 38835, 49191, 51780, 54369, 60410, 65588, 72492, 77670, 81985, 90615, 98382, 108738, 114779, 120820, 147573, 155340, 163970, 181230, 196764, 217476, 229558, 245955, 271845, 295146, 327940, 344337, 362460, 459116, 491910, 543690, 573895, 590292, 688674, 737865, 983820, 1033011, 1087380, 1147790, 1377348, 1475730, 1721685, 2066022, 2295580, 2951460, 3443370, 4132044, 5165055, 6886740, 10330110, 20660220]

約数ペア:

[(1, 20660220), (2, 10330110), (3, 6886740), (4, 5165055), (5, 4132044), (6, 3443370), (7, 2951460), (9, 2295580), (10, 2066022), (12, 1721685), (14, 1475730), (15, 1377348), (18, 1147790), (19, 1087380), (20, 1033011), (21, 983820), (28, 737865), (30, 688674), (35, 590292), (36, 573895), (38, 543690), (42, 491910), (45, 459116), (57, 362460), (60, 344337), (63, 327940), (70, 295146), (76, 271845), (84, 245955), (90, 229558), (95, 217476), (105, 196764), (114, 181230), (126, 163970), (133, 155340), (140, 147573), (171, 120820), (180, 114779), (190, 108738), (210, 98382), (228, 90615), (252, 81985), (266, 77670), (285, 72492), (315, 65588), (342, 60410), (380, 54369), (399, 51780), (420, 49191), (532, 38835), (570, 36246), (630, 32794), (665, 31068), (684, 30205), (798, 25890), (855, 24164), (863, 23940), (1140, 18123), (1197, 17260), (1260, 16397), (1330, 15534), (1596, 12945), (1710, 12082), (1726, 11970), (1995, 10356), (2394, 8630), (2589, 7980), (2660, 7767), (3420, 6041), (3452, 5985), (3990, 5178), (4315, 4788)]