20003680

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:192

約数の個数: 96

約数和(自身を含む): 50561280

約数和(自身を除く): 30557600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 37, 40, 62, 74, 80, 109, 124, 148, 155, 160, 185, 218, 248, 296, 310, 370, 436, 496, 545, 592, 620, 740, 872, 992, 1090, 1147, 1184, 1240, 1480, 1744, 2180, 2294, 2480, 2960, 3379, 3488, 4033, 4360, 4588, 4960, 5735, 5920, 6758, 8066, 8720, 9176, 11470, 13516, 16132, 16895, 17440, 18352, 20165, 22940, 27032, 32264, 33790, 36704, 40330, 45880, 54064, 64528, 67580, 80660, 91760, 108128, 125023, 129056, 135160, 161320, 183520, 250046, 270320, 322640, 500092, 540640, 625115, 645280, 1000184, 1250230, 2000368, 2500460, 4000736, 5000920, 10001840, 20003680]

約数ペア:

[(1, 20003680), (2, 10001840), (4, 5000920), (5, 4000736), (8, 2500460), (10, 2000368), (16, 1250230), (20, 1000184), (31, 645280), (32, 625115), (37, 540640), (40, 500092), (62, 322640), (74, 270320), (80, 250046), (109, 183520), (124, 161320), (148, 135160), (155, 129056), (160, 125023), (185, 108128), (218, 91760), (248, 80660), (296, 67580), (310, 64528), (370, 54064), (436, 45880), (496, 40330), (545, 36704), (592, 33790), (620, 32264), (740, 27032), (872, 22940), (992, 20165), (1090, 18352), (1147, 17440), (1184, 16895), (1240, 16132), (1480, 13516), (1744, 11470), (2180, 9176), (2294, 8720), (2480, 8066), (2960, 6758), (3379, 5920), (3488, 5735), (4033, 4960), (4360, 4588)]