21697380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{809}}^1$

素因数の和:973

約数の個数: 72

約数和(自身を含む): 66339000

約数和(自身を除く): 44641620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 149, 180, 298, 447, 596, 745, 809, 894, 1341, 1490, 1618, 1788, 2235, 2427, 2682, 2980, 3236, 4045, 4470, 4854, 5364, 6705, 7281, 8090, 8940, 9708, 12135, 13410, 14562, 16180, 24270, 26820, 29124, 36405, 48540, 72810, 120541, 145620, 241082, 361623, 482164, 602705, 723246, 1084869, 1205410, 1446492, 1808115, 2169738, 2410820, 3616230, 4339476, 5424345, 7232460, 10848690, 21697380]

約数ペア:

[(1, 21697380), (2, 10848690), (3, 7232460), (4, 5424345), (5, 4339476), (6, 3616230), (9, 2410820), (10, 2169738), (12, 1808115), (15, 1446492), (18, 1205410), (20, 1084869), (30, 723246), (36, 602705), (45, 482164), (60, 361623), (90, 241082), (149, 145620), (180, 120541), (298, 72810), (447, 48540), (596, 36405), (745, 29124), (809, 26820), (894, 24270), (1341, 16180), (1490, 14562), (1618, 13410), (1788, 12135), (2235, 9708), (2427, 8940), (2682, 8090), (2980, 7281), (3236, 6705), (4045, 5364), (4470, 4854)]