20909160

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{241}}^2$

素因数の和:499

約数の個数: 72

約数和(自身を含む): 68237910

約数和(自身を除く): 47328750

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 241, 360, 482, 723, 964, 1205, 1446, 1928, 2169, 2410, 2892, 3615, 4338, 4820, 5784, 7230, 8676, 9640, 10845, 14460, 17352, 21690, 28920, 43380, 58081, 86760, 116162, 174243, 232324, 290405, 348486, 464648, 522729, 580810, 696972, 871215, 1045458, 1161620, 1393944, 1742430, 2090916, 2323240, 2613645, 3484860, 4181832, 5227290, 6969720, 10454580, 20909160]

約数ペア:

[(1, 20909160), (2, 10454580), (3, 6969720), (4, 5227290), (5, 4181832), (6, 3484860), (8, 2613645), (9, 2323240), (10, 2090916), (12, 1742430), (15, 1393944), (18, 1161620), (20, 1045458), (24, 871215), (30, 696972), (36, 580810), (40, 522729), (45, 464648), (60, 348486), (72, 290405), (90, 232324), (120, 174243), (180, 116162), (241, 86760), (360, 58081), (482, 43380), (723, 28920), (964, 21690), (1205, 17352), (1446, 14460), (1928, 10845), (2169, 9640), (2410, 8676), (2892, 7230), (3615, 5784), (4338, 4820)]