81574740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:590

約数の個数: 144

約数和(自身を含む): 270781056

約数和(自身を除く): 189206316

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 71, 78, 90, 117, 130, 142, 156, 180, 195, 213, 234, 260, 284, 355, 390, 426, 468, 491, 585, 639, 710, 780, 852, 923, 982, 1065, 1170, 1278, 1420, 1473, 1846, 1964, 2130, 2340, 2455, 2556, 2769, 2946, 3195, 3692, 4260, 4419, 4615, 4910, 5538, 5892, 6383, 6390, 7365, 8307, 8838, 9230, 9820, 11076, 12766, 12780, 13845, 14730, 16614, 17676, 18460, 19149, 22095, 25532, 27690, 29460, 31915, 33228, 34861, 38298, 41535, 44190, 55380, 57447, 63830, 69722, 76596, 83070, 88380, 95745, 104583, 114894, 127660, 139444, 166140, 174305, 191490, 209166, 229788, 287235, 313749, 348610, 382980, 418332, 453193, 522915, 574470, 627498, 697220, 906386, 1045830, 1148940, 1254996, 1359579, 1568745, 1812772, 2091660, 2265965, 2719158, 3137490, 4078737, 4531930, 5438316, 6274980, 6797895, 8157474, 9063860, 13595790, 16314948, 20393685, 27191580, 40787370, 81574740]

約数ペア:

[(1, 81574740), (2, 40787370), (3, 27191580), (4, 20393685), (5, 16314948), (6, 13595790), (9, 9063860), (10, 8157474), (12, 6797895), (13, 6274980), (15, 5438316), (18, 4531930), (20, 4078737), (26, 3137490), (30, 2719158), (36, 2265965), (39, 2091660), (45, 1812772), (52, 1568745), (60, 1359579), (65, 1254996), (71, 1148940), (78, 1045830), (90, 906386), (117, 697220), (130, 627498), (142, 574470), (156, 522915), (180, 453193), (195, 418332), (213, 382980), (234, 348610), (260, 313749), (284, 287235), (355, 229788), (390, 209166), (426, 191490), (468, 174305), (491, 166140), (585, 139444), (639, 127660), (710, 114894), (780, 104583), (852, 95745), (923, 88380), (982, 83070), (1065, 76596), (1170, 69722), (1278, 63830), (1420, 57447), (1473, 55380), (1846, 44190), (1964, 41535), (2130, 38298), (2340, 34861), (2455, 33228), (2556, 31915), (2769, 29460), (2946, 27690), (3195, 25532), (3692, 22095), (4260, 19149), (4419, 18460), (4615, 17676), (4910, 16614), (5538, 14730), (5892, 13845), (6383, 12780), (6390, 12766), (7365, 11076), (8307, 9820), (8838, 9230)]