20695740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{157}}^1$

素因数の和:208

約数の個数: 96

約数和(自身を含む): 63174720

約数和(自身を除く): 42478980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 157, 169, 195, 260, 314, 338, 390, 471, 507, 628, 676, 780, 785, 845, 942, 1014, 1570, 1690, 1884, 2028, 2041, 2197, 2355, 2535, 3140, 3380, 4082, 4394, 4710, 5070, 6123, 6591, 8164, 8788, 9420, 10140, 10205, 10985, 12246, 13182, 20410, 21970, 24492, 26364, 26533, 30615, 32955, 40820, 43940, 53066, 61230, 65910, 79599, 106132, 122460, 131820, 132665, 159198, 265330, 318396, 344929, 397995, 530660, 689858, 795990, 1034787, 1379716, 1591980, 1724645, 2069574, 3449290, 4139148, 5173935, 6898580, 10347870, 20695740]

約数ペア:

[(1, 20695740), (2, 10347870), (3, 6898580), (4, 5173935), (5, 4139148), (6, 3449290), (10, 2069574), (12, 1724645), (13, 1591980), (15, 1379716), (20, 1034787), (26, 795990), (30, 689858), (39, 530660), (52, 397995), (60, 344929), (65, 318396), (78, 265330), (130, 159198), (156, 132665), (157, 131820), (169, 122460), (195, 106132), (260, 79599), (314, 65910), (338, 61230), (390, 53066), (471, 43940), (507, 40820), (628, 32955), (676, 30615), (780, 26533), (785, 26364), (845, 24492), (942, 21970), (1014, 20410), (1570, 13182), (1690, 12246), (1884, 10985), (2028, 10205), (2041, 10140), (2197, 9420), (2355, 8788), (2535, 8164), (3140, 6591), (3380, 6123), (4082, 5070), (4394, 4710)]