21877040

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4483}}^1$

素因数の和:4557

約数の個数: 40

約数和(自身を含む): 51709488

約数和(自身を除く): 29832448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4483, 4880, 8966, 17932, 22415, 35864, 44830, 71728, 89660, 179320, 273463, 358640, 546926, 1093852, 1367315, 2187704, 2734630, 4375408, 5469260, 10938520, 21877040]

約数ペア:

[(1, 21877040), (2, 10938520), (4, 5469260), (5, 4375408), (8, 2734630), (10, 2187704), (16, 1367315), (20, 1093852), (40, 546926), (61, 358640), (80, 273463), (122, 179320), (244, 89660), (305, 71728), (488, 44830), (610, 35864), (976, 22415), (1220, 17932), (2440, 8966), (4483, 4880)]