21196340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:173

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 31058380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 59, 71, 92, 110, 115, 118, 142, 220, 230, 236, 253, 284, 295, 355, 460, 506, 590, 649, 710, 781, 1012, 1180, 1265, 1298, 1357, 1420, 1562, 1633, 2530, 2596, 2714, 3124, 3245, 3266, 3905, 4189, 5060, 5428, 6490, 6532, 6785, 7810, 8165, 8378, 12980, 13570, 14927, 15620, 16330, 16756, 17963, 20945, 27140, 29854, 32660, 35926, 41890, 46079, 59708, 71852, 74635, 83780, 89815, 92158, 96347, 149270, 179630, 184316, 192694, 230395, 298540, 359260, 385388, 460790, 481735, 921580, 963470, 1059817, 1926940, 2119634, 4239268, 5299085, 10598170, 21196340]

約数ペア:

[(1, 21196340), (2, 10598170), (4, 5299085), (5, 4239268), (10, 2119634), (11, 1926940), (20, 1059817), (22, 963470), (23, 921580), (44, 481735), (46, 460790), (55, 385388), (59, 359260), (71, 298540), (92, 230395), (110, 192694), (115, 184316), (118, 179630), (142, 149270), (220, 96347), (230, 92158), (236, 89815), (253, 83780), (284, 74635), (295, 71852), (355, 59708), (460, 46079), (506, 41890), (590, 35926), (649, 32660), (710, 29854), (781, 27140), (1012, 20945), (1180, 17963), (1265, 16756), (1298, 16330), (1357, 15620), (1420, 14927), (1562, 13570), (1633, 12980), (2530, 8378), (2596, 8165), (2714, 7810), (3124, 6785), (3245, 6532), (3266, 6490), (3905, 5428), (4189, 5060)]