20856420

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2971}}^1$

素因数の和:3002

約数の個数: 96

約数和(自身を含む): 69901440

約数和(自身を除く): 49045020

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, 180, 195, 234, 260, 270, 351, 390, 468, 540, 585, 702, 780, 1170, 1404, 1755, 2340, 2971, 3510, 5942, 7020, 8913, 11884, 14855, 17826, 26739, 29710, 35652, 38623, 44565, 53478, 59420, 77246, 80217, 89130, 106956, 115869, 133695, 154492, 160434, 178260, 193115, 231738, 267390, 320868, 347607, 386230, 401085, 463476, 534780, 579345, 695214, 772460, 802170, 1042821, 1158690, 1390428, 1604340, 1738035, 2085642, 2317380, 3476070, 4171284, 5214105, 6952140, 10428210, 20856420]

約数ペア:

[(1, 20856420), (2, 10428210), (3, 6952140), (4, 5214105), (5, 4171284), (6, 3476070), (9, 2317380), (10, 2085642), (12, 1738035), (13, 1604340), (15, 1390428), (18, 1158690), (20, 1042821), (26, 802170), (27, 772460), (30, 695214), (36, 579345), (39, 534780), (45, 463476), (52, 401085), (54, 386230), (60, 347607), (65, 320868), (78, 267390), (90, 231738), (108, 193115), (117, 178260), (130, 160434), (135, 154492), (156, 133695), (180, 115869), (195, 106956), (234, 89130), (260, 80217), (270, 77246), (351, 59420), (390, 53478), (468, 44565), (540, 38623), (585, 35652), (702, 29710), (780, 26739), (1170, 17826), (1404, 14855), (1755, 11884), (2340, 8913), (2971, 7020), (3510, 5942)]