189157040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{857}}^1$

素因数の和:990

約数の個数: 80

約数和(自身を含む): 459613440

約数和(自身を除く): 270456400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 89, 124, 155, 178, 248, 310, 356, 445, 496, 620, 712, 857, 890, 1240, 1424, 1714, 1780, 2480, 2759, 3428, 3560, 4285, 5518, 6856, 7120, 8570, 11036, 13712, 13795, 17140, 22072, 26567, 27590, 34280, 44144, 53134, 55180, 68560, 76273, 106268, 110360, 132835, 152546, 212536, 220720, 265670, 305092, 381365, 425072, 531340, 610184, 762730, 1062680, 1220368, 1525460, 2125360, 2364463, 3050920, 4728926, 6101840, 9457852, 11822315, 18915704, 23644630, 37831408, 47289260, 94578520, 189157040]

約数ペア:

[(1, 189157040), (2, 94578520), (4, 47289260), (5, 37831408), (8, 23644630), (10, 18915704), (16, 11822315), (20, 9457852), (31, 6101840), (40, 4728926), (62, 3050920), (80, 2364463), (89, 2125360), (124, 1525460), (155, 1220368), (178, 1062680), (248, 762730), (310, 610184), (356, 531340), (445, 425072), (496, 381365), (620, 305092), (712, 265670), (857, 220720), (890, 212536), (1240, 152546), (1424, 132835), (1714, 110360), (1780, 106268), (2480, 76273), (2759, 68560), (3428, 55180), (3560, 53134), (4285, 44144), (5518, 34280), (6856, 27590), (7120, 26567), (8570, 22072), (11036, 17140), (13712, 13795)]