71961968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:310

約数の個数: 80

約数和(自身を含む): 160406400

約数和(自身を除く): 88444432

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 131, 139, 152, 208, 247, 262, 278, 304, 494, 524, 556, 988, 1048, 1112, 1703, 1807, 1976, 2096, 2224, 2489, 2641, 3406, 3614, 3952, 4978, 5282, 6812, 7228, 9956, 10564, 13624, 14456, 18209, 19912, 21128, 27248, 28912, 32357, 34333, 36418, 39824, 42256, 64714, 68666, 72836, 129428, 137332, 145672, 236717, 258856, 274664, 291344, 345971, 473434, 517712, 549328, 691942, 946868, 1383884, 1893736, 2767768, 3787472, 4497623, 5535536, 8995246, 17990492, 35980984, 71961968]

約数ペア:

[(1, 71961968), (2, 35980984), (4, 17990492), (8, 8995246), (13, 5535536), (16, 4497623), (19, 3787472), (26, 2767768), (38, 1893736), (52, 1383884), (76, 946868), (104, 691942), (131, 549328), (139, 517712), (152, 473434), (208, 345971), (247, 291344), (262, 274664), (278, 258856), (304, 236717), (494, 145672), (524, 137332), (556, 129428), (988, 72836), (1048, 68666), (1112, 64714), (1703, 42256), (1807, 39824), (1976, 36418), (2096, 34333), (2224, 32357), (2489, 28912), (2641, 27248), (3406, 21128), (3614, 19912), (3952, 18209), (4978, 14456), (5282, 13624), (6812, 10564), (7228, 9956)]