1991440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:128

約数の個数: 80

約数和(自身を含む): 5285376

約数和(自身を除く): 3293936

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 73, 80, 88, 110, 124, 146, 155, 176, 220, 248, 292, 310, 341, 365, 440, 496, 584, 620, 682, 730, 803, 880, 1168, 1240, 1364, 1460, 1606, 1705, 2263, 2480, 2728, 2920, 3212, 3410, 4015, 4526, 5456, 5840, 6424, 6820, 8030, 9052, 11315, 12848, 13640, 16060, 18104, 22630, 24893, 27280, 32120, 36208, 45260, 49786, 64240, 90520, 99572, 124465, 181040, 199144, 248930, 398288, 497860, 995720, 1991440]

約数ペア:

[(1, 1991440), (2, 995720), (4, 497860), (5, 398288), (8, 248930), (10, 199144), (11, 181040), (16, 124465), (20, 99572), (22, 90520), (31, 64240), (40, 49786), (44, 45260), (55, 36208), (62, 32120), (73, 27280), (80, 24893), (88, 22630), (110, 18104), (124, 16060), (146, 13640), (155, 12848), (176, 11315), (220, 9052), (248, 8030), (292, 6820), (310, 6424), (341, 5840), (365, 5456), (440, 4526), (496, 4015), (584, 3410), (620, 3212), (682, 2920), (730, 2728), (803, 2480), (880, 2263), (1168, 1705), (1240, 1606), (1364, 1460)]