20645070

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:401

約数の個数: 64

約数和(自身を含む): 51978240

約数和(自身を除く): 31333170

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 79, 93, 155, 158, 186, 237, 281, 310, 395, 465, 474, 562, 790, 843, 930, 1185, 1405, 1686, 2370, 2449, 2810, 4215, 4898, 7347, 8430, 8711, 12245, 14694, 17422, 22199, 24490, 26133, 36735, 43555, 44398, 52266, 66597, 73470, 87110, 110995, 130665, 133194, 221990, 261330, 332985, 665970, 688169, 1376338, 2064507, 3440845, 4129014, 6881690, 10322535, 20645070]

約数ペア:

[(1, 20645070), (2, 10322535), (3, 6881690), (5, 4129014), (6, 3440845), (10, 2064507), (15, 1376338), (30, 688169), (31, 665970), (62, 332985), (79, 261330), (93, 221990), (155, 133194), (158, 130665), (186, 110995), (237, 87110), (281, 73470), (310, 66597), (395, 52266), (465, 44398), (474, 43555), (562, 36735), (790, 26133), (843, 24490), (930, 22199), (1185, 17422), (1405, 14694), (1686, 12245), (2370, 8711), (2449, 8430), (2810, 7347), (4215, 4898)]