31288920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:705

約数の個数: 128

約数和(自身を含む): 104509440

約数和(自身を除く): 73220520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 31, 39, 40, 52, 60, 62, 65, 78, 93, 104, 120, 124, 130, 155, 156, 186, 195, 248, 260, 310, 312, 372, 390, 403, 465, 520, 620, 647, 744, 780, 806, 930, 1209, 1240, 1294, 1560, 1612, 1860, 1941, 2015, 2418, 2588, 3224, 3235, 3720, 3882, 4030, 4836, 5176, 6045, 6470, 7764, 8060, 8411, 9672, 9705, 12090, 12940, 15528, 16120, 16822, 19410, 20057, 24180, 25233, 25880, 33644, 38820, 40114, 42055, 48360, 50466, 60171, 67288, 77640, 80228, 84110, 100285, 100932, 120342, 126165, 160456, 168220, 200570, 201864, 240684, 252330, 260741, 300855, 336440, 401140, 481368, 504660, 521482, 601710, 782223, 802280, 1009320, 1042964, 1203420, 1303705, 1564446, 2085928, 2406840, 2607410, 3128892, 3911115, 5214820, 6257784, 7822230, 10429640, 15644460, 31288920]

約数ペア:

[(1, 31288920), (2, 15644460), (3, 10429640), (4, 7822230), (5, 6257784), (6, 5214820), (8, 3911115), (10, 3128892), (12, 2607410), (13, 2406840), (15, 2085928), (20, 1564446), (24, 1303705), (26, 1203420), (30, 1042964), (31, 1009320), (39, 802280), (40, 782223), (52, 601710), (60, 521482), (62, 504660), (65, 481368), (78, 401140), (93, 336440), (104, 300855), (120, 260741), (124, 252330), (130, 240684), (155, 201864), (156, 200570), (186, 168220), (195, 160456), (248, 126165), (260, 120342), (310, 100932), (312, 100285), (372, 84110), (390, 80228), (403, 77640), (465, 67288), (520, 60171), (620, 50466), (647, 48360), (744, 42055), (780, 40114), (806, 38820), (930, 33644), (1209, 25880), (1240, 25233), (1294, 24180), (1560, 20057), (1612, 19410), (1860, 16822), (1941, 16120), (2015, 15528), (2418, 12940), (2588, 12090), (3224, 9705), (3235, 9672), (3720, 8411), (3882, 8060), (4030, 7764), (4836, 6470), (5176, 6045)]