21688440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1213}}^1$

素因数の和:1376

約数の個数: 64

約数和(自身を含む): 65556000

約数和(自身を除く): 43867560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 149, 298, 447, 596, 745, 894, 1192, 1213, 1490, 1788, 2235, 2426, 2980, 3576, 3639, 4470, 4852, 5960, 6065, 7278, 8940, 9704, 12130, 14556, 17880, 18195, 24260, 29112, 36390, 48520, 72780, 145560, 180737, 361474, 542211, 722948, 903685, 1084422, 1445896, 1807370, 2168844, 2711055, 3614740, 4337688, 5422110, 7229480, 10844220, 21688440]

約数ペア:

[(1, 21688440), (2, 10844220), (3, 7229480), (4, 5422110), (5, 4337688), (6, 3614740), (8, 2711055), (10, 2168844), (12, 1807370), (15, 1445896), (20, 1084422), (24, 903685), (30, 722948), (40, 542211), (60, 361474), (120, 180737), (149, 145560), (298, 72780), (447, 48520), (596, 36390), (745, 29112), (894, 24260), (1192, 18195), (1213, 17880), (1490, 14556), (1788, 12130), (2235, 9704), (2426, 8940), (2980, 7278), (3576, 6065), (3639, 5960), (4470, 4852)]