18498860

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 40309920

約数和(自身を除く): 21811060

約数列:

[1, 2, 4, 5, 10, 20, 59, 61, 118, 122, 236, 244, 257, 295, 305, 514, 590, 610, 1028, 1180, 1220, 1285, 2570, 3599, 5140, 7198, 14396, 15163, 15677, 17995, 30326, 31354, 35990, 60652, 62708, 71980, 75815, 78385, 151630, 156770, 303260, 313540, 924943, 1849886, 3699772, 4624715, 9249430, 18498860]

約数ペア:

[(1, 18498860), (2, 9249430), (4, 4624715), (5, 3699772), (10, 1849886), (20, 924943), (59, 313540), (61, 303260), (118, 156770), (122, 151630), (236, 78385), (244, 75815), (257, 71980), (295, 62708), (305, 60652), (514, 35990), (590, 31354), (610, 30326), (1028, 17995), (1180, 15677), (1220, 15163), (1285, 14396), (2570, 7198), (3599, 5140)]