81565380

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1291}}^1$

素因数の和:1328

約数の個数: 144

約数和(自身を含む): 276529344

約数和(自身を除く): 194963964

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 81, 90, 108, 117, 130, 135, 156, 162, 180, 195, 234, 243, 260, 270, 324, 351, 390, 405, 468, 486, 540, 585, 702, 780, 810, 972, 1053, 1170, 1215, 1291, 1404, 1620, 1755, 2106, 2340, 2430, 2582, 3159, 3510, 3873, 4212, 4860, 5164, 5265, 6318, 6455, 7020, 7746, 10530, 11619, 12636, 12910, 15492, 15795, 16783, 19365, 21060, 23238, 25820, 31590, 33566, 34857, 38730, 46476, 50349, 58095, 63180, 67132, 69714, 77460, 83915, 100698, 104571, 116190, 139428, 151047, 167830, 174285, 201396, 209142, 232380, 251745, 302094, 313713, 335660, 348570, 418284, 453141, 503490, 522855, 604188, 627426, 697140, 755235, 906282, 1006980, 1045710, 1254852, 1359423, 1510470, 1568565, 1812564, 2091420, 2265705, 2718846, 3020940, 3137130, 4078269, 4531410, 5437692, 6274260, 6797115, 8156538, 9062820, 13594230, 16313076, 20391345, 27188460, 40782690, 81565380]

約数ペア:

[(1, 81565380), (2, 40782690), (3, 27188460), (4, 20391345), (5, 16313076), (6, 13594230), (9, 9062820), (10, 8156538), (12, 6797115), (13, 6274260), (15, 5437692), (18, 4531410), (20, 4078269), (26, 3137130), (27, 3020940), (30, 2718846), (36, 2265705), (39, 2091420), (45, 1812564), (52, 1568565), (54, 1510470), (60, 1359423), (65, 1254852), (78, 1045710), (81, 1006980), (90, 906282), (108, 755235), (117, 697140), (130, 627426), (135, 604188), (156, 522855), (162, 503490), (180, 453141), (195, 418284), (234, 348570), (243, 335660), (260, 313713), (270, 302094), (324, 251745), (351, 232380), (390, 209142), (405, 201396), (468, 174285), (486, 167830), (540, 151047), (585, 139428), (702, 116190), (780, 104571), (810, 100698), (972, 83915), (1053, 77460), (1170, 69714), (1215, 67132), (1291, 63180), (1404, 58095), (1620, 50349), (1755, 46476), (2106, 38730), (2340, 34857), (2430, 33566), (2582, 31590), (3159, 25820), (3510, 23238), (3873, 21060), (4212, 19365), (4860, 16783), (5164, 15795), (5265, 15492), (6318, 12910), (6455, 12636), (7020, 11619), (7746, 10530)]