1981098721

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 2554675200

約数和(自身を除く): 573576479

約数列:

[1, 7, 23, 29, 41, 79, 131, 161, 203, 287, 553, 667, 917, 943, 1189, 1817, 2291, 3013, 3239, 3799, 4669, 5371, 6601, 8323, 10349, 12719, 16037, 21091, 22673, 26593, 27347, 37597, 52693, 72443, 74497, 87377, 93931, 123533, 155759, 191429, 238027, 300121, 368851, 424309, 521479, 611639, 657517, 864731, 1090313, 1666189, 2100847, 2160413, 2970163, 3582457, 6902783, 9759107, 12304961, 15122891, 25077199, 48319481, 68313749, 86134727, 283014103, 1981098721]

約数ペア:

[(1, 1981098721), (7, 283014103), (23, 86134727), (29, 68313749), (41, 48319481), (79, 25077199), (131, 15122891), (161, 12304961), (203, 9759107), (287, 6902783), (553, 3582457), (667, 2970163), (917, 2160413), (943, 2100847), (1189, 1666189), (1817, 1090313), (2291, 864731), (3013, 657517), (3239, 611639), (3799, 521479), (4669, 424309), (5371, 368851), (6601, 300121), (8323, 238027), (10349, 191429), (12719, 155759), (16037, 123533), (21091, 93931), (22673, 87377), (26593, 74497), (27347, 72443), (37597, 52693)]