31730980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{839}}^1$

素因数の和:940

約数の個数: 48

約数和(自身を含む): 69995520

約数和(自身を除く): 38264540

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 610, 620, 839, 1220, 1678, 1891, 3356, 3782, 4195, 7564, 8390, 9455, 16780, 18910, 26009, 37820, 51179, 52018, 102358, 104036, 130045, 204716, 255895, 260090, 511790, 520180, 1023580, 1586549, 3173098, 6346196, 7932745, 15865490, 31730980]

約数ペア:

[(1, 31730980), (2, 15865490), (4, 7932745), (5, 6346196), (10, 3173098), (20, 1586549), (31, 1023580), (61, 520180), (62, 511790), (122, 260090), (124, 255895), (155, 204716), (244, 130045), (305, 104036), (310, 102358), (610, 52018), (620, 51179), (839, 37820), (1220, 26009), (1678, 18910), (1891, 16780), (3356, 9455), (3782, 8390), (4195, 7564)]