21431392

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{349}}^1$

素因数の和:479

約数の個数: 48

約数和(自身を含む): 44982000

約数和(自身を除く): 23550608

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 101, 152, 202, 304, 349, 404, 608, 698, 808, 1396, 1616, 1919, 2792, 3232, 3838, 5584, 6631, 7676, 11168, 13262, 15352, 26524, 30704, 35249, 53048, 61408, 70498, 106096, 140996, 212192, 281992, 563984, 669731, 1127968, 1339462, 2678924, 5357848, 10715696, 21431392]

約数ペア:

[(1, 21431392), (2, 10715696), (4, 5357848), (8, 2678924), (16, 1339462), (19, 1127968), (32, 669731), (38, 563984), (76, 281992), (101, 212192), (152, 140996), (202, 106096), (304, 70498), (349, 61408), (404, 53048), (608, 35249), (698, 30704), (808, 26524), (1396, 15352), (1616, 13262), (1919, 11168), (2792, 7676), (3232, 6631), (3838, 5584)]