19955010

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{499}}^1$

素因数の和:583

約数の個数: 64

約数和(自身を含む): 50688000

約数和(自身を除く): 30732990

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 43, 62, 86, 93, 129, 155, 186, 215, 258, 310, 430, 465, 499, 645, 930, 998, 1290, 1333, 1497, 2495, 2666, 2994, 3999, 4990, 6665, 7485, 7998, 13330, 14970, 15469, 19995, 21457, 30938, 39990, 42914, 46407, 64371, 77345, 92814, 107285, 128742, 154690, 214570, 232035, 321855, 464070, 643710, 665167, 1330334, 1995501, 3325835, 3991002, 6651670, 9977505, 19955010]

約数ペア:

[(1, 19955010), (2, 9977505), (3, 6651670), (5, 3991002), (6, 3325835), (10, 1995501), (15, 1330334), (30, 665167), (31, 643710), (43, 464070), (62, 321855), (86, 232035), (93, 214570), (129, 154690), (155, 128742), (186, 107285), (215, 92814), (258, 77345), (310, 64371), (430, 46407), (465, 42914), (499, 39990), (645, 30938), (930, 21457), (998, 19995), (1290, 15469), (1333, 14970), (1497, 13330), (2495, 7998), (2666, 7485), (2994, 6665), (3999, 4990)]