20302520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2339}}^1$

素因数の和:2388

約数の個数: 64

約数和(自身を含む): 53913600

約数和(自身を除く): 33611080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2339, 4340, 4678, 8680, 9356, 11695, 16373, 18712, 23390, 32746, 46780, 65492, 72509, 81865, 93560, 130984, 145018, 163730, 290036, 327460, 362545, 507563, 580072, 654920, 725090, 1015126, 1450180, 2030252, 2537815, 2900360, 4060504, 5075630, 10151260, 20302520]

約数ペア:

[(1, 20302520), (2, 10151260), (4, 5075630), (5, 4060504), (7, 2900360), (8, 2537815), (10, 2030252), (14, 1450180), (20, 1015126), (28, 725090), (31, 654920), (35, 580072), (40, 507563), (56, 362545), (62, 327460), (70, 290036), (124, 163730), (140, 145018), (155, 130984), (217, 93560), (248, 81865), (280, 72509), (310, 65492), (434, 46780), (620, 32746), (868, 23390), (1085, 18712), (1240, 16373), (1736, 11695), (2170, 9356), (2339, 8680), (4340, 4678)]