8215340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 20511792

約数和(自身を除く): 12296452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 83, 98, 101, 140, 166, 196, 202, 245, 332, 404, 415, 490, 505, 581, 707, 830, 980, 1010, 1162, 1414, 1660, 2020, 2324, 2828, 2905, 3535, 4067, 4949, 5810, 7070, 8134, 8383, 9898, 11620, 14140, 16268, 16766, 19796, 20335, 24745, 33532, 40670, 41915, 49490, 58681, 81340, 83830, 98980, 117362, 167660, 234724, 293405, 410767, 586810, 821534, 1173620, 1643068, 2053835, 4107670, 8215340]

約数ペア:

[(1, 8215340), (2, 4107670), (4, 2053835), (5, 1643068), (7, 1173620), (10, 821534), (14, 586810), (20, 410767), (28, 293405), (35, 234724), (49, 167660), (70, 117362), (83, 98980), (98, 83830), (101, 81340), (140, 58681), (166, 49490), (196, 41915), (202, 40670), (245, 33532), (332, 24745), (404, 20335), (415, 19796), (490, 16766), (505, 16268), (581, 14140), (707, 11620), (830, 9898), (980, 8383), (1010, 8134), (1162, 7070), (1414, 5810), (1660, 4949), (2020, 4067), (2324, 3535), (2828, 2905)]