210672020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{157}}^1\times {\mathrm{397}}^1$

素因数の和:589

約数の個数: 72

約数和(自身を含む): 483326424

約数和(自身を除く): 272654404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 157, 169, 260, 314, 338, 397, 628, 676, 785, 794, 845, 1570, 1588, 1690, 1985, 2041, 3140, 3380, 3970, 4082, 5161, 7940, 8164, 10205, 10322, 20410, 20644, 25805, 26533, 40820, 51610, 53066, 62329, 67093, 103220, 106132, 124658, 132665, 134186, 249316, 265330, 268372, 311645, 335465, 530660, 623290, 670930, 810277, 1246580, 1341860, 1620554, 3241108, 4051385, 8102770, 10533601, 16205540, 21067202, 42134404, 52668005, 105336010, 210672020]

約数ペア:

[(1, 210672020), (2, 105336010), (4, 52668005), (5, 42134404), (10, 21067202), (13, 16205540), (20, 10533601), (26, 8102770), (52, 4051385), (65, 3241108), (130, 1620554), (157, 1341860), (169, 1246580), (260, 810277), (314, 670930), (338, 623290), (397, 530660), (628, 335465), (676, 311645), (785, 268372), (794, 265330), (845, 249316), (1570, 134186), (1588, 132665), (1690, 124658), (1985, 106132), (2041, 103220), (3140, 67093), (3380, 62329), (3970, 53066), (4082, 51610), (5161, 40820), (7940, 26533), (8164, 25805), (10205, 20644), (10322, 20410)]