20377538

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:290

約数の個数: 32

約数和(自身を含む): 33480000

約数和(自身を除く): 13102462

約数列:

[1, 2, 19, 38, 59, 61, 118, 122, 149, 298, 1121, 1159, 2242, 2318, 2831, 3599, 5662, 7198, 8791, 9089, 17582, 18178, 68381, 136762, 167029, 172691, 334058, 345382, 536251, 1072502, 10188769, 20377538]

約数ペア:

[(1, 20377538), (2, 10188769), (19, 1072502), (38, 536251), (59, 345382), (61, 334058), (118, 172691), (122, 167029), (149, 136762), (298, 68381), (1121, 18178), (1159, 17582), (2242, 9089), (2318, 8791), (2831, 7198), (3599, 5662)]