81307940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{269}}^1$

素因数の和:429

約数の個数: 96

約数和(自身を含む): 209018880

約数和(自身を除く): 127710940

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 127, 140, 170, 238, 254, 269, 340, 476, 508, 538, 595, 635, 889, 1076, 1190, 1270, 1345, 1778, 1883, 2159, 2380, 2540, 2690, 3556, 3766, 4318, 4445, 4573, 5380, 7532, 8636, 8890, 9146, 9415, 10795, 15113, 17780, 18292, 18830, 21590, 22865, 30226, 32011, 34163, 37660, 43180, 45730, 60452, 64022, 68326, 75565, 91460, 128044, 136652, 151130, 160055, 170815, 239141, 302260, 320110, 341630, 478282, 580771, 640220, 683260, 956564, 1161542, 1195705, 2323084, 2391410, 2903855, 4065397, 4782820, 5807710, 8130794, 11615420, 16261588, 20326985, 40653970, 81307940]

約数ペア:

[(1, 81307940), (2, 40653970), (4, 20326985), (5, 16261588), (7, 11615420), (10, 8130794), (14, 5807710), (17, 4782820), (20, 4065397), (28, 2903855), (34, 2391410), (35, 2323084), (68, 1195705), (70, 1161542), (85, 956564), (119, 683260), (127, 640220), (140, 580771), (170, 478282), (238, 341630), (254, 320110), (269, 302260), (340, 239141), (476, 170815), (508, 160055), (538, 151130), (595, 136652), (635, 128044), (889, 91460), (1076, 75565), (1190, 68326), (1270, 64022), (1345, 60452), (1778, 45730), (1883, 43180), (2159, 37660), (2380, 34163), (2540, 32011), (2690, 30226), (3556, 22865), (3766, 21590), (4318, 18830), (4445, 18292), (4573, 17780), (5380, 15113), (7532, 10795), (8636, 9415), (8890, 9146)]