86786980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{19997}}^1$

素因数の和:20044

約数の個数: 48

約数和(自身を含む): 215018496

約数和(自身を除く): 128231516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 19997, 39994, 79988, 99985, 139979, 199970, 279958, 399940, 559916, 619907, 699895, 1239814, 1399790, 2479628, 2799580, 3099535, 4339349, 6199070, 8678698, 12398140, 17357396, 21696745, 43393490, 86786980]

約数ペア:

[(1, 86786980), (2, 43393490), (4, 21696745), (5, 17357396), (7, 12398140), (10, 8678698), (14, 6199070), (20, 4339349), (28, 3099535), (31, 2799580), (35, 2479628), (62, 1399790), (70, 1239814), (124, 699895), (140, 619907), (155, 559916), (217, 399940), (310, 279958), (434, 199970), (620, 139979), (868, 99985), (1085, 79988), (2170, 39994), (4340, 19997)]