21691620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3257}}^1$

素因数の和:3309

約数の個数: 72

約数和(自身を含む): 67596984

約数和(自身を除く): 45905364

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 3257, 3330, 6514, 6660, 9771, 13028, 16285, 19542, 29313, 32570, 39084, 48855, 58626, 65140, 97710, 117252, 120509, 146565, 195420, 241018, 293130, 361527, 482036, 586260, 602545, 723054, 1084581, 1205090, 1446108, 1807635, 2169162, 2410180, 3615270, 4338324, 5422905, 7230540, 10845810, 21691620]

約数ペア:

[(1, 21691620), (2, 10845810), (3, 7230540), (4, 5422905), (5, 4338324), (6, 3615270), (9, 2410180), (10, 2169162), (12, 1807635), (15, 1446108), (18, 1205090), (20, 1084581), (30, 723054), (36, 602545), (37, 586260), (45, 482036), (60, 361527), (74, 293130), (90, 241018), (111, 195420), (148, 146565), (180, 120509), (185, 117252), (222, 97710), (333, 65140), (370, 58626), (444, 48855), (555, 39084), (666, 32570), (740, 29313), (1110, 19542), (1332, 16285), (1665, 13028), (2220, 9771), (3257, 6660), (3330, 6514)]