18988020

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{3907}}^1$

素因数の和:3931

約数の個数: 72

約数和(自身を含む): 59745504

約数和(自身を除く): 40757484

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 3907, 4860, 7814, 11721, 15628, 19535, 23442, 35163, 39070, 46884, 58605, 70326, 78140, 105489, 117210, 140652, 175815, 210978, 234420, 316467, 351630, 421956, 527445, 632934, 703260, 949401, 1054890, 1265868, 1582335, 1898802, 2109780, 3164670, 3797604, 4747005, 6329340, 9494010, 18988020]

約数ペア:

[(1, 18988020), (2, 9494010), (3, 6329340), (4, 4747005), (5, 3797604), (6, 3164670), (9, 2109780), (10, 1898802), (12, 1582335), (15, 1265868), (18, 1054890), (20, 949401), (27, 703260), (30, 632934), (36, 527445), (45, 421956), (54, 351630), (60, 316467), (81, 234420), (90, 210978), (108, 175815), (135, 140652), (162, 117210), (180, 105489), (243, 78140), (270, 70326), (324, 58605), (405, 46884), (486, 39070), (540, 35163), (810, 23442), (972, 19535), (1215, 15628), (1620, 11721), (2430, 7814), (3907, 4860)]