278157040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{5581}}^1$

素因数の和:5690

約数の個数: 80

約数和(自身を含む): 747541440

約数和(自身を除く): 469384400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 445, 560, 623, 712, 890, 1246, 1424, 1780, 2492, 3115, 3560, 4984, 5581, 6230, 7120, 9968, 11162, 12460, 22324, 24920, 27905, 39067, 44648, 49840, 55810, 78134, 89296, 111620, 156268, 195335, 223240, 312536, 390670, 446480, 496709, 625072, 781340, 993418, 1562680, 1986836, 2483545, 3125360, 3476963, 3973672, 4967090, 6953926, 7947344, 9934180, 13907852, 17384815, 19868360, 27815704, 34769630, 39736720, 55631408, 69539260, 139078520, 278157040]

約数ペア:

[(1, 278157040), (2, 139078520), (4, 69539260), (5, 55631408), (7, 39736720), (8, 34769630), (10, 27815704), (14, 19868360), (16, 17384815), (20, 13907852), (28, 9934180), (35, 7947344), (40, 6953926), (56, 4967090), (70, 3973672), (80, 3476963), (89, 3125360), (112, 2483545), (140, 1986836), (178, 1562680), (280, 993418), (356, 781340), (445, 625072), (560, 496709), (623, 446480), (712, 390670), (890, 312536), (1246, 223240), (1424, 195335), (1780, 156268), (2492, 111620), (3115, 89296), (3560, 78134), (4984, 55810), (5581, 49840), (6230, 44648), (7120, 39067), (9968, 27905), (11162, 24920), (12460, 22324)]