20009073380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{787139}}^1$

素因数の和:787220

約数の個数: 48

約数和(自身を含む): 44432478720

約数和(自身を除く): 24423405340

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 820, 1271, 2542, 5084, 6355, 12710, 25420, 787139, 1574278, 3148556, 3935695, 7871390, 15742780, 24401309, 32272699, 48802618, 64545398, 97605236, 122006545, 129090796, 161363495, 244013090, 322726990, 488026180, 645453980, 1000453669, 2000907338, 4001814676, 5002268345, 10004536690, 20009073380]

約数ペア:

[(1, 20009073380), (2, 10004536690), (4, 5002268345), (5, 4001814676), (10, 2000907338), (20, 1000453669), (31, 645453980), (41, 488026180), (62, 322726990), (82, 244013090), (124, 161363495), (155, 129090796), (164, 122006545), (205, 97605236), (310, 64545398), (410, 48802618), (620, 32272699), (820, 24401309), (1271, 15742780), (2542, 7871390), (5084, 3935695), (6355, 3148556), (12710, 1574278), (25420, 787139)]