21263580

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{233}}^1$

素因数の和:277

約数の個数: 144

約数和(自身を含む): 71940960

約数和(自身を除く): 50677380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 90, 108, 117, 130, 135, 156, 169, 180, 195, 233, 234, 260, 270, 338, 351, 390, 466, 468, 507, 540, 585, 676, 699, 702, 780, 845, 932, 1014, 1165, 1170, 1398, 1404, 1521, 1690, 1755, 2028, 2097, 2330, 2340, 2535, 2796, 3029, 3042, 3380, 3495, 3510, 4194, 4563, 4660, 5070, 6058, 6084, 6291, 6990, 7020, 7605, 8388, 9087, 9126, 10140, 10485, 12116, 12582, 13980, 15145, 15210, 18174, 18252, 20970, 22815, 25164, 27261, 30290, 30420, 31455, 36348, 39377, 41940, 45435, 45630, 54522, 60580, 62910, 78754, 81783, 90870, 91260, 109044, 118131, 125820, 136305, 157508, 163566, 181740, 196885, 236262, 272610, 327132, 354393, 393770, 408915, 472524, 545220, 590655, 708786, 787540, 817830, 1063179, 1181310, 1417572, 1635660, 1771965, 2126358, 2362620, 3543930, 4252716, 5315895, 7087860, 10631790, 21263580]

約数ペア:

[(1, 21263580), (2, 10631790), (3, 7087860), (4, 5315895), (5, 4252716), (6, 3543930), (9, 2362620), (10, 2126358), (12, 1771965), (13, 1635660), (15, 1417572), (18, 1181310), (20, 1063179), (26, 817830), (27, 787540), (30, 708786), (36, 590655), (39, 545220), (45, 472524), (52, 408915), (54, 393770), (60, 354393), (65, 327132), (78, 272610), (90, 236262), (108, 196885), (117, 181740), (130, 163566), (135, 157508), (156, 136305), (169, 125820), (180, 118131), (195, 109044), (233, 91260), (234, 90870), (260, 81783), (270, 78754), (338, 62910), (351, 60580), (390, 54522), (466, 45630), (468, 45435), (507, 41940), (540, 39377), (585, 36348), (676, 31455), (699, 30420), (702, 30290), (780, 27261), (845, 25164), (932, 22815), (1014, 20970), (1165, 18252), (1170, 18174), (1398, 15210), (1404, 15145), (1521, 13980), (1690, 12582), (1755, 12116), (2028, 10485), (2097, 10140), (2330, 9126), (2340, 9087), (2535, 8388), (2796, 7605), (3029, 7020), (3042, 6990), (3380, 6291), (3495, 6084), (3510, 6058), (4194, 5070), (4563, 4660)]