81734940

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{3089}}^1$

素因数の和:3121

約数の個数: 144

約数和(自身を含む): 295898400

約数和(自身を除く): 214163460

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 84, 90, 98, 105, 108, 126, 135, 140, 147, 180, 189, 196, 210, 245, 252, 270, 294, 315, 378, 420, 441, 490, 540, 588, 630, 735, 756, 882, 945, 980, 1260, 1323, 1470, 1764, 1890, 2205, 2646, 2940, 3089, 3780, 4410, 5292, 6178, 6615, 8820, 9267, 12356, 13230, 15445, 18534, 21623, 26460, 27801, 30890, 37068, 43246, 46335, 55602, 61780, 64869, 83403, 86492, 92670, 108115, 111204, 129738, 139005, 151361, 166806, 185340, 194607, 216230, 259476, 278010, 302722, 324345, 333612, 389214, 417015, 432460, 454083, 556020, 583821, 605444, 648690, 756805, 778428, 834030, 908166, 973035, 1167642, 1297380, 1362249, 1513610, 1668060, 1816332, 1946070, 2270415, 2335284, 2724498, 2919105, 3027220, 3892140, 4086747, 4540830, 5448996, 5838210, 6811245, 8173494, 9081660, 11676420, 13622490, 16346988, 20433735, 27244980, 40867470, 81734940]

約数ペア:

[(1, 81734940), (2, 40867470), (3, 27244980), (4, 20433735), (5, 16346988), (6, 13622490), (7, 11676420), (9, 9081660), (10, 8173494), (12, 6811245), (14, 5838210), (15, 5448996), (18, 4540830), (20, 4086747), (21, 3892140), (27, 3027220), (28, 2919105), (30, 2724498), (35, 2335284), (36, 2270415), (42, 1946070), (45, 1816332), (49, 1668060), (54, 1513610), (60, 1362249), (63, 1297380), (70, 1167642), (84, 973035), (90, 908166), (98, 834030), (105, 778428), (108, 756805), (126, 648690), (135, 605444), (140, 583821), (147, 556020), (180, 454083), (189, 432460), (196, 417015), (210, 389214), (245, 333612), (252, 324345), (270, 302722), (294, 278010), (315, 259476), (378, 216230), (420, 194607), (441, 185340), (490, 166806), (540, 151361), (588, 139005), (630, 129738), (735, 111204), (756, 108115), (882, 92670), (945, 86492), (980, 83403), (1260, 64869), (1323, 61780), (1470, 55602), (1764, 46335), (1890, 43246), (2205, 37068), (2646, 30890), (2940, 27801), (3089, 26460), (3780, 21623), (4410, 18534), (5292, 15445), (6178, 13230), (6615, 12356), (8820, 9267)]