81969784

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{653}}^1$

素因数の和:760

約数の個数: 64

約数和(自身を含む): 177992640

約数和(自身を除く): 96022856

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 71, 104, 136, 142, 221, 284, 442, 568, 653, 884, 923, 1207, 1306, 1768, 1846, 2414, 2612, 3692, 4828, 5224, 7384, 8489, 9656, 11101, 15691, 16978, 22202, 31382, 33956, 44404, 46363, 62764, 67912, 88808, 92726, 125528, 144313, 185452, 288626, 370904, 577252, 602719, 788171, 1154504, 1205438, 1576342, 2410876, 3152684, 4821752, 6305368, 10246223, 20492446, 40984892, 81969784]

約数ペア:

[(1, 81969784), (2, 40984892), (4, 20492446), (8, 10246223), (13, 6305368), (17, 4821752), (26, 3152684), (34, 2410876), (52, 1576342), (68, 1205438), (71, 1154504), (104, 788171), (136, 602719), (142, 577252), (221, 370904), (284, 288626), (442, 185452), (568, 144313), (653, 125528), (884, 92726), (923, 88808), (1207, 67912), (1306, 62764), (1768, 46363), (1846, 44404), (2414, 33956), (2612, 31382), (3692, 22202), (4828, 16978), (5224, 15691), (7384, 11101), (8489, 9656)]