21007829560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1625993}}^1$

素因数の和:1626040

約数の個数: 64

約数和(自身を含む): 52682205600

約数和(自身を除く): 31674376040

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1615, 2584, 3230, 6460, 12920, 1625993, 3251986, 6503972, 8129965, 13007944, 16259930, 27641881, 30893867, 32519860, 55283762, 61787734, 65039720, 110567524, 123575468, 138209405, 154469335, 221135048, 247150936, 276418810, 308938670, 525195739, 552837620, 617877340, 1050391478, 1105675240, 1235754680, 2100782956, 2625978695, 4201565912, 5251957390, 10503914780, 21007829560]

約数ペア:

[(1, 21007829560), (2, 10503914780), (4, 5251957390), (5, 4201565912), (8, 2625978695), (10, 2100782956), (17, 1235754680), (19, 1105675240), (20, 1050391478), (34, 617877340), (38, 552837620), (40, 525195739), (68, 308938670), (76, 276418810), (85, 247150936), (95, 221135048), (136, 154469335), (152, 138209405), (170, 123575468), (190, 110567524), (323, 65039720), (340, 61787734), (380, 55283762), (646, 32519860), (680, 30893867), (760, 27641881), (1292, 16259930), (1615, 13007944), (2584, 8129965), (3230, 6503972), (6460, 3251986), (12920, 1625993)]