19810140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{467}}^1$

素因数の和:587

約数の個数: 96

約数和(自身を含む): 64157184

約数和(自身を除く): 44347044

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 101, 105, 140, 202, 210, 303, 404, 420, 467, 505, 606, 707, 934, 1010, 1212, 1401, 1414, 1515, 1868, 2020, 2121, 2335, 2802, 2828, 3030, 3269, 3535, 4242, 4670, 5604, 6060, 6538, 7005, 7070, 8484, 9340, 9807, 10605, 13076, 14010, 14140, 16345, 19614, 21210, 28020, 32690, 39228, 42420, 47167, 49035, 65380, 94334, 98070, 141501, 188668, 196140, 235835, 283002, 330169, 471670, 566004, 660338, 707505, 943340, 990507, 1320676, 1415010, 1650845, 1981014, 2830020, 3301690, 3962028, 4952535, 6603380, 9905070, 19810140]

約数ペア:

[(1, 19810140), (2, 9905070), (3, 6603380), (4, 4952535), (5, 3962028), (6, 3301690), (7, 2830020), (10, 1981014), (12, 1650845), (14, 1415010), (15, 1320676), (20, 990507), (21, 943340), (28, 707505), (30, 660338), (35, 566004), (42, 471670), (60, 330169), (70, 283002), (84, 235835), (101, 196140), (105, 188668), (140, 141501), (202, 98070), (210, 94334), (303, 65380), (404, 49035), (420, 47167), (467, 42420), (505, 39228), (606, 32690), (707, 28020), (934, 21210), (1010, 19614), (1212, 16345), (1401, 14140), (1414, 14010), (1515, 13076), (1868, 10605), (2020, 9807), (2121, 9340), (2335, 8484), (2802, 7070), (2828, 7005), (3030, 6538), (3269, 6060), (3535, 5604), (4242, 4670)]