20842620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:467

約数の個数: 96

約数和(自身を含む): 62899200

約数和(自身を除く): 42056580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 47, 57, 60, 76, 94, 95, 114, 141, 188, 190, 228, 235, 282, 285, 380, 389, 470, 564, 570, 705, 778, 893, 940, 1140, 1167, 1410, 1556, 1786, 1945, 2334, 2679, 2820, 3572, 3890, 4465, 4668, 5358, 5835, 7391, 7780, 8930, 10716, 11670, 13395, 14782, 17860, 18283, 22173, 23340, 26790, 29564, 36566, 36955, 44346, 53580, 54849, 73132, 73910, 88692, 91415, 109698, 110865, 147820, 182830, 219396, 221730, 274245, 347377, 365660, 443460, 548490, 694754, 1042131, 1096980, 1389508, 1736885, 2084262, 3473770, 4168524, 5210655, 6947540, 10421310, 20842620]

約数ペア:

[(1, 20842620), (2, 10421310), (3, 6947540), (4, 5210655), (5, 4168524), (6, 3473770), (10, 2084262), (12, 1736885), (15, 1389508), (19, 1096980), (20, 1042131), (30, 694754), (38, 548490), (47, 443460), (57, 365660), (60, 347377), (76, 274245), (94, 221730), (95, 219396), (114, 182830), (141, 147820), (188, 110865), (190, 109698), (228, 91415), (235, 88692), (282, 73910), (285, 73132), (380, 54849), (389, 53580), (470, 44346), (564, 36955), (570, 36566), (705, 29564), (778, 26790), (893, 23340), (940, 22173), (1140, 18283), (1167, 17860), (1410, 14782), (1556, 13395), (1786, 11670), (1945, 10716), (2334, 8930), (2679, 7780), (2820, 7391), (3572, 5835), (3890, 5358), (4465, 4668)]