18204128

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{379}}^1$

素因数の和:487

約数の個数: 48

約数和(自身を含む): 38304000

約数和(自身を除く): 20099872

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 79, 152, 158, 304, 316, 379, 608, 632, 758, 1264, 1501, 1516, 2528, 3002, 3032, 6004, 6064, 7201, 12008, 12128, 14402, 24016, 28804, 29941, 48032, 57608, 59882, 115216, 119764, 230432, 239528, 479056, 568879, 958112, 1137758, 2275516, 4551032, 9102064, 18204128]

約数ペア:

[(1, 18204128), (2, 9102064), (4, 4551032), (8, 2275516), (16, 1137758), (19, 958112), (32, 568879), (38, 479056), (76, 239528), (79, 230432), (152, 119764), (158, 115216), (304, 59882), (316, 57608), (379, 48032), (608, 29941), (632, 28804), (758, 24016), (1264, 14402), (1501, 12128), (1516, 12008), (2528, 7201), (3002, 6064), (3032, 6004)]