18841960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11489}}^1$

素因数の和:11541

約数の個数: 32

約数和(自身を含む): 43432200

約数和(自身を除く): 24590240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11489, 22978, 45956, 57445, 91912, 114890, 229780, 459560, 471049, 942098, 1884196, 2355245, 3768392, 4710490, 9420980, 18841960]

約数ペア:

[(1, 18841960), (2, 9420980), (4, 4710490), (5, 3768392), (8, 2355245), (10, 1884196), (20, 942098), (40, 471049), (41, 459560), (82, 229780), (164, 114890), (205, 91912), (328, 57445), (410, 45956), (820, 22978), (1640, 11489)]