18940360

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11549}}^1$

素因数の和:11601

約数の個数: 32

約数和(自身を含む): 43659000

約数和(自身を除く): 24718640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11549, 23098, 46196, 57745, 92392, 115490, 230980, 461960, 473509, 947018, 1894036, 2367545, 3788072, 4735090, 9470180, 18940360]

約数ペア:

[(1, 18940360), (2, 9470180), (4, 4735090), (5, 3788072), (8, 2367545), (10, 1894036), (20, 947018), (40, 473509), (41, 461960), (82, 230980), (164, 115490), (205, 92392), (328, 57745), (410, 46196), (820, 23098), (1640, 11549)]