77811890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 161499744

約数和(自身を除く): 83687854

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 137, 170, 221, 257, 274, 442, 514, 685, 1105, 1285, 1370, 1781, 2210, 2329, 2570, 3341, 3562, 4369, 4658, 6682, 8738, 8905, 11645, 16705, 17810, 21845, 23290, 30277, 33410, 35209, 43690, 56797, 60554, 70418, 113594, 151385, 176045, 283985, 302770, 352090, 457717, 567970, 598553, 915434, 1197106, 2288585, 2992765, 4577170, 5985530, 7781189, 15562378, 38905945, 77811890]

約数ペア:

[(1, 77811890), (2, 38905945), (5, 15562378), (10, 7781189), (13, 5985530), (17, 4577170), (26, 2992765), (34, 2288585), (65, 1197106), (85, 915434), (130, 598553), (137, 567970), (170, 457717), (221, 352090), (257, 302770), (274, 283985), (442, 176045), (514, 151385), (685, 113594), (1105, 70418), (1285, 60554), (1370, 56797), (1781, 43690), (2210, 35209), (2329, 33410), (2570, 30277), (3341, 23290), (3562, 21845), (4369, 17810), (4658, 16705), (6682, 11645), (8738, 8905)]