21502150

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:265

約数の個数: 48

約数和(自身を含む): 41787504

約数和(自身を除く): 20285354

約数列:

[1, 2, 5, 10, 25, 43, 50, 73, 86, 137, 146, 215, 274, 365, 430, 685, 730, 1075, 1370, 1825, 2150, 3139, 3425, 3650, 5891, 6278, 6850, 10001, 11782, 15695, 20002, 29455, 31390, 50005, 58910, 78475, 100010, 147275, 156950, 250025, 294550, 430043, 500050, 860086, 2150215, 4300430, 10751075, 21502150]

約数ペア:

[(1, 21502150), (2, 10751075), (5, 4300430), (10, 2150215), (25, 860086), (43, 500050), (50, 430043), (73, 294550), (86, 250025), (137, 156950), (146, 147275), (215, 100010), (274, 78475), (365, 58910), (430, 50005), (685, 31390), (730, 29455), (1075, 20002), (1370, 15695), (1825, 11782), (2150, 10001), (3139, 6850), (3425, 6278), (3650, 5891)]