20964524

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{251}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 44593920

約数和(自身を除く): 23629396

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 157, 251, 266, 314, 502, 532, 628, 1004, 1099, 1757, 2198, 2983, 3514, 4396, 4769, 5966, 7028, 9538, 11932, 19076, 20881, 33383, 39407, 41762, 66766, 78814, 83524, 133532, 157628, 275849, 551698, 748733, 1103396, 1497466, 2994932, 5241131, 10482262, 20964524]

約数ペア:

[(1, 20964524), (2, 10482262), (4, 5241131), (7, 2994932), (14, 1497466), (19, 1103396), (28, 748733), (38, 551698), (76, 275849), (133, 157628), (157, 133532), (251, 83524), (266, 78814), (314, 66766), (502, 41762), (532, 39407), (628, 33383), (1004, 20881), (1099, 19076), (1757, 11932), (2198, 9538), (2983, 7028), (3514, 5966), (4396, 4769)]