20716920

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{8221}}^1$

素因数の和:8245

約数の個数: 96

約数和(自身を含む): 76957920

約数和(自身を除く): 56241000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 8221, 16442, 24663, 32884, 41105, 49326, 57547, 65768, 73989, 82210, 98652, 115094, 123315, 147978, 164420, 172641, 197304, 230188, 246630, 287735, 295956, 328840, 345282, 369945, 460376, 493260, 517923, 575470, 591912, 690564, 739890, 863205, 986520, 1035846, 1150940, 1381128, 1479780, 1726410, 2071692, 2301880, 2589615, 2959560, 3452820, 4143384, 5179230, 6905640, 10358460, 20716920]

約数ペア:

[(1, 20716920), (2, 10358460), (3, 6905640), (4, 5179230), (5, 4143384), (6, 3452820), (7, 2959560), (8, 2589615), (9, 2301880), (10, 2071692), (12, 1726410), (14, 1479780), (15, 1381128), (18, 1150940), (20, 1035846), (21, 986520), (24, 863205), (28, 739890), (30, 690564), (35, 591912), (36, 575470), (40, 517923), (42, 493260), (45, 460376), (56, 369945), (60, 345282), (63, 328840), (70, 295956), (72, 287735), (84, 246630), (90, 230188), (105, 197304), (120, 172641), (126, 164420), (140, 147978), (168, 123315), (180, 115094), (210, 98652), (252, 82210), (280, 73989), (315, 65768), (360, 57547), (420, 49326), (504, 41105), (630, 32884), (840, 24663), (1260, 16442), (2520, 8221)]