178514920

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1\times {\mathrm{331}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 409953600

約数和(自身を除く): 231438680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 139, 194, 278, 331, 388, 485, 556, 662, 695, 776, 970, 1112, 1324, 1390, 1655, 1940, 2648, 2780, 3310, 3880, 5560, 6620, 13240, 13483, 26966, 32107, 46009, 53932, 64214, 67415, 92018, 107864, 128428, 134830, 160535, 184036, 230045, 256856, 269660, 321070, 368072, 460090, 539320, 642140, 920180, 1284280, 1840360, 4462873, 8925746, 17851492, 22314365, 35702984, 44628730, 89257460, 178514920]

約数ペア:

[(1, 178514920), (2, 89257460), (4, 44628730), (5, 35702984), (8, 22314365), (10, 17851492), (20, 8925746), (40, 4462873), (97, 1840360), (139, 1284280), (194, 920180), (278, 642140), (331, 539320), (388, 460090), (485, 368072), (556, 321070), (662, 269660), (695, 256856), (776, 230045), (970, 184036), (1112, 160535), (1324, 134830), (1390, 128428), (1655, 107864), (1940, 92018), (2648, 67415), (2780, 64214), (3310, 53932), (3880, 46009), (5560, 32107), (6620, 26966), (13240, 13483)]