20179905320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{435287}}^1$

素因数の和:435378

約数の個数: 64

約数和(自身を含む): 48578140800

約数和(自身を除く): 28398235480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 305, 380, 488, 610, 760, 1159, 1220, 2318, 2440, 4636, 5795, 9272, 11590, 23180, 46360, 435287, 870574, 1741148, 2176435, 3482296, 4352870, 8270453, 8705740, 16540906, 17411480, 26552507, 33081812, 41352265, 53105014, 66163624, 82704530, 106210028, 132762535, 165409060, 212420056, 265525070, 330818120, 504497633, 531050140, 1008995266, 1062100280, 2017990532, 2522488165, 4035981064, 5044976330, 10089952660, 20179905320]

約数ペア:

[(1, 20179905320), (2, 10089952660), (4, 5044976330), (5, 4035981064), (8, 2522488165), (10, 2017990532), (19, 1062100280), (20, 1008995266), (38, 531050140), (40, 504497633), (61, 330818120), (76, 265525070), (95, 212420056), (122, 165409060), (152, 132762535), (190, 106210028), (244, 82704530), (305, 66163624), (380, 53105014), (488, 41352265), (610, 33081812), (760, 26552507), (1159, 17411480), (1220, 16540906), (2318, 8705740), (2440, 8270453), (4636, 4352870), (5795, 3482296), (9272, 2176435), (11590, 1741148), (23180, 870574), (46360, 435287)]