18977660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1553}}^1$

素因数の和:1622

約数の個数: 48

約数和(自身を含む): 43860096

約数和(自身を除く): 24882436

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 1553, 2444, 3055, 3106, 6110, 6212, 7765, 12220, 15530, 20189, 31060, 40378, 72991, 80756, 100945, 145982, 201890, 291964, 364955, 403780, 729910, 948883, 1459820, 1897766, 3795532, 4744415, 9488830, 18977660]

約数ペア:

[(1, 18977660), (2, 9488830), (4, 4744415), (5, 3795532), (10, 1897766), (13, 1459820), (20, 948883), (26, 729910), (47, 403780), (52, 364955), (65, 291964), (94, 201890), (130, 145982), (188, 100945), (235, 80756), (260, 72991), (470, 40378), (611, 31060), (940, 20189), (1222, 15530), (1553, 12220), (2444, 7765), (3055, 6212), (3106, 6110)]