128556540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{397}}^1$

素因数の和:676

約数の個数: 144

約数和(自身を含む): 448523712

約数和(自身を除く): 319967172

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 257, 315, 397, 420, 514, 630, 771, 794, 1028, 1191, 1260, 1285, 1542, 1588, 1799, 1985, 2313, 2382, 2570, 2779, 3084, 3573, 3598, 3855, 3970, 4626, 4764, 5140, 5397, 5558, 5955, 7146, 7196, 7710, 7940, 8337, 8995, 9252, 10794, 11116, 11565, 11910, 13895, 14292, 15420, 16191, 16674, 17865, 17990, 21588, 23130, 23820, 25011, 26985, 27790, 32382, 33348, 35730, 35980, 41685, 46260, 50022, 53970, 55580, 64764, 71460, 80955, 83370, 100044, 102029, 107940, 125055, 161910, 166740, 204058, 250110, 306087, 323820, 408116, 500220, 510145, 612174, 714203, 918261, 1020290, 1224348, 1428406, 1530435, 1836522, 2040580, 2142609, 2856812, 3060870, 3571015, 3673044, 4285218, 4591305, 6121740, 6427827, 7142030, 8570436, 9182610, 10713045, 12855654, 14284060, 18365220, 21426090, 25711308, 32139135, 42852180, 64278270, 128556540]

約数ペア:

[(1, 128556540), (2, 64278270), (3, 42852180), (4, 32139135), (5, 25711308), (6, 21426090), (7, 18365220), (9, 14284060), (10, 12855654), (12, 10713045), (14, 9182610), (15, 8570436), (18, 7142030), (20, 6427827), (21, 6121740), (28, 4591305), (30, 4285218), (35, 3673044), (36, 3571015), (42, 3060870), (45, 2856812), (60, 2142609), (63, 2040580), (70, 1836522), (84, 1530435), (90, 1428406), (105, 1224348), (126, 1020290), (140, 918261), (180, 714203), (210, 612174), (252, 510145), (257, 500220), (315, 408116), (397, 323820), (420, 306087), (514, 250110), (630, 204058), (771, 166740), (794, 161910), (1028, 125055), (1191, 107940), (1260, 102029), (1285, 100044), (1542, 83370), (1588, 80955), (1799, 71460), (1985, 64764), (2313, 55580), (2382, 53970), (2570, 50022), (2779, 46260), (3084, 41685), (3573, 35980), (3598, 35730), (3855, 33348), (3970, 32382), (4626, 27790), (4764, 26985), (5140, 25011), (5397, 23820), (5558, 23130), (5955, 21588), (7146, 17990), (7196, 17865), (7710, 16674), (7940, 16191), (8337, 15420), (8995, 14292), (9252, 13895), (10794, 11910), (11116, 11565)]