20731657340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1\times {\mathrm{6263}}^1$

素因数の和:6603

約数の個数: 96

約数和(自身を含む): 47482122240

約数和(自身を除く): 26750464900

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 281, 310, 380, 562, 589, 620, 1124, 1178, 1405, 2356, 2810, 2945, 5339, 5620, 5890, 6263, 8711, 10678, 11780, 12526, 17422, 21356, 25052, 26695, 31315, 34844, 43555, 53390, 62630, 87110, 106780, 118997, 125260, 165509, 174220, 194153, 237994, 331018, 388306, 475988, 594985, 662036, 776612, 827545, 970765, 1189970, 1655090, 1759903, 1941530, 2379940, 3310180, 3519806, 3688907, 3883060, 7039612, 7377814, 8799515, 14755628, 17599030, 18444535, 33438157, 35198060, 36889070, 54556993, 66876314, 73778140, 109113986, 133752628, 167190785, 218227972, 272784965, 334381570, 545569930, 668763140, 1036582867, 1091139860, 2073165734, 4146331468, 5182914335, 10365828670, 20731657340]

約数ペア:

[(1, 20731657340), (2, 10365828670), (4, 5182914335), (5, 4146331468), (10, 2073165734), (19, 1091139860), (20, 1036582867), (31, 668763140), (38, 545569930), (62, 334381570), (76, 272784965), (95, 218227972), (124, 167190785), (155, 133752628), (190, 109113986), (281, 73778140), (310, 66876314), (380, 54556993), (562, 36889070), (589, 35198060), (620, 33438157), (1124, 18444535), (1178, 17599030), (1405, 14755628), (2356, 8799515), (2810, 7377814), (2945, 7039612), (5339, 3883060), (5620, 3688907), (5890, 3519806), (6263, 3310180), (8711, 2379940), (10678, 1941530), (11780, 1759903), (12526, 1655090), (17422, 1189970), (21356, 970765), (25052, 827545), (26695, 776612), (31315, 662036), (34844, 594985), (43555, 475988), (53390, 388306), (62630, 331018), (87110, 237994), (106780, 194153), (118997, 174220), (125260, 165509)]