640870140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{150439}}^1$

素因数の和:150522

約数の個数: 48

約数和(自身を含む): 1819722240

約数和(自身を除く): 1178852100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 150439, 300878, 451317, 601756, 752195, 902634, 1504390, 1805268, 2256585, 3008780, 4513170, 9026340, 10681169, 21362338, 32043507, 42724676, 53405845, 64087014, 106811690, 128174028, 160217535, 213623380, 320435070, 640870140]

約数ペア:

[(1, 640870140), (2, 320435070), (3, 213623380), (4, 160217535), (5, 128174028), (6, 106811690), (10, 64087014), (12, 53405845), (15, 42724676), (20, 32043507), (30, 21362338), (60, 10681169), (71, 9026340), (142, 4513170), (213, 3008780), (284, 2256585), (355, 1805268), (426, 1504390), (710, 902634), (852, 752195), (1065, 601756), (1420, 451317), (2130, 300878), (4260, 150439)]