280249020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{487}}^1$

素因数の和:664

約数の個数: 144

約数和(自身を含む): 895265280

約数和(自身を除く): 615016260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 139, 180, 207, 230, 276, 278, 345, 414, 417, 460, 487, 556, 690, 695, 828, 834, 974, 1035, 1251, 1380, 1390, 1461, 1668, 1948, 2070, 2085, 2435, 2502, 2780, 2922, 3197, 4140, 4170, 4383, 4870, 5004, 5844, 6255, 6394, 7305, 8340, 8766, 9591, 9740, 11201, 12510, 12788, 14610, 15985, 17532, 19182, 21915, 22402, 25020, 28773, 29220, 31970, 33603, 38364, 43830, 44804, 47955, 56005, 57546, 63940, 67206, 67693, 87660, 95910, 100809, 112010, 115092, 134412, 135386, 143865, 168015, 191820, 201618, 203079, 224020, 270772, 287730, 336030, 338465, 403236, 406158, 504045, 575460, 609237, 672060, 676930, 812316, 1008090, 1015395, 1218474, 1353860, 1556939, 2016180, 2030790, 2436948, 3046185, 3113878, 4061580, 4670817, 6092370, 6227756, 7784695, 9341634, 12184740, 14012451, 15569390, 18683268, 23354085, 28024902, 31138780, 46708170, 56049804, 70062255, 93416340, 140124510, 280249020]

約数ペア:

[(1, 280249020), (2, 140124510), (3, 93416340), (4, 70062255), (5, 56049804), (6, 46708170), (9, 31138780), (10, 28024902), (12, 23354085), (15, 18683268), (18, 15569390), (20, 14012451), (23, 12184740), (30, 9341634), (36, 7784695), (45, 6227756), (46, 6092370), (60, 4670817), (69, 4061580), (90, 3113878), (92, 3046185), (115, 2436948), (138, 2030790), (139, 2016180), (180, 1556939), (207, 1353860), (230, 1218474), (276, 1015395), (278, 1008090), (345, 812316), (414, 676930), (417, 672060), (460, 609237), (487, 575460), (556, 504045), (690, 406158), (695, 403236), (828, 338465), (834, 336030), (974, 287730), (1035, 270772), (1251, 224020), (1380, 203079), (1390, 201618), (1461, 191820), (1668, 168015), (1948, 143865), (2070, 135386), (2085, 134412), (2435, 115092), (2502, 112010), (2780, 100809), (2922, 95910), (3197, 87660), (4140, 67693), (4170, 67206), (4383, 63940), (4870, 57546), (5004, 56005), (5844, 47955), (6255, 44804), (6394, 43830), (7305, 38364), (8340, 33603), (8766, 31970), (9591, 29220), (9740, 28773), (11201, 25020), (12510, 22402), (12788, 21915), (14610, 19182), (15985, 17532)]