21510430

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:444

約数の個数: 32

約数和(自身を含む): 39774240

約数和(自身を除く): 18263810

約数列:

[1, 2, 5, 10, 61, 122, 179, 197, 305, 358, 394, 610, 895, 985, 1790, 1970, 10919, 12017, 21838, 24034, 35263, 54595, 60085, 70526, 109190, 120170, 176315, 352630, 2151043, 4302086, 10755215, 21510430]

約数ペア:

[(1, 21510430), (2, 10755215), (5, 4302086), (10, 2151043), (61, 352630), (122, 176315), (179, 120170), (197, 109190), (305, 70526), (358, 60085), (394, 54595), (610, 35263), (895, 24034), (985, 21838), (1790, 12017), (1970, 10919)]