19711980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2671}}^1$

素因数の和:2727

約数の個数: 72

約数和(自身を含む): 61274304

約数和(自身を除く): 41562324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 41, 45, 60, 82, 90, 123, 164, 180, 205, 246, 369, 410, 492, 615, 738, 820, 1230, 1476, 1845, 2460, 2671, 3690, 5342, 7380, 8013, 10684, 13355, 16026, 24039, 26710, 32052, 40065, 48078, 53420, 80130, 96156, 109511, 120195, 160260, 219022, 240390, 328533, 438044, 480780, 547555, 657066, 985599, 1095110, 1314132, 1642665, 1971198, 2190220, 3285330, 3942396, 4927995, 6570660, 9855990, 19711980]

約数ペア:

[(1, 19711980), (2, 9855990), (3, 6570660), (4, 4927995), (5, 3942396), (6, 3285330), (9, 2190220), (10, 1971198), (12, 1642665), (15, 1314132), (18, 1095110), (20, 985599), (30, 657066), (36, 547555), (41, 480780), (45, 438044), (60, 328533), (82, 240390), (90, 219022), (123, 160260), (164, 120195), (180, 109511), (205, 96156), (246, 80130), (369, 53420), (410, 48078), (492, 40065), (615, 32052), (738, 26710), (820, 24039), (1230, 16026), (1476, 13355), (1845, 10684), (2460, 8013), (2671, 7380), (3690, 5342)]