81904212

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:254

約数の個数: 144

約数和(自身を含む): 240123520

約数和(自身を除く): 158219308

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 52, 57, 61, 76, 78, 114, 117, 122, 151, 156, 171, 183, 228, 234, 244, 247, 302, 342, 366, 453, 468, 494, 549, 604, 684, 732, 741, 793, 906, 988, 1098, 1159, 1359, 1482, 1586, 1812, 1963, 2196, 2223, 2318, 2379, 2718, 2869, 2964, 3172, 3477, 3926, 4446, 4636, 4758, 5436, 5738, 5889, 6954, 7137, 7852, 8607, 8892, 9211, 9516, 10431, 11476, 11778, 13908, 14274, 15067, 17214, 17667, 18422, 20862, 23556, 25821, 27633, 28548, 30134, 34428, 35334, 36844, 37297, 41724, 45201, 51642, 55266, 60268, 70668, 74594, 82899, 90402, 103284, 110532, 111891, 119743, 135603, 149188, 165798, 175009, 180804, 223782, 239486, 271206, 331596, 335673, 350018, 359229, 447564, 478972, 525027, 542412, 671346, 700036, 718458, 1050054, 1077687, 1342692, 1436916, 1575081, 2100108, 2155374, 2275117, 3150162, 4310748, 4550234, 6300324, 6825351, 9100468, 13650702, 20476053, 27301404, 40952106, 81904212]

約数ペア:

[(1, 81904212), (2, 40952106), (3, 27301404), (4, 20476053), (6, 13650702), (9, 9100468), (12, 6825351), (13, 6300324), (18, 4550234), (19, 4310748), (26, 3150162), (36, 2275117), (38, 2155374), (39, 2100108), (52, 1575081), (57, 1436916), (61, 1342692), (76, 1077687), (78, 1050054), (114, 718458), (117, 700036), (122, 671346), (151, 542412), (156, 525027), (171, 478972), (183, 447564), (228, 359229), (234, 350018), (244, 335673), (247, 331596), (302, 271206), (342, 239486), (366, 223782), (453, 180804), (468, 175009), (494, 165798), (549, 149188), (604, 135603), (684, 119743), (732, 111891), (741, 110532), (793, 103284), (906, 90402), (988, 82899), (1098, 74594), (1159, 70668), (1359, 60268), (1482, 55266), (1586, 51642), (1812, 45201), (1963, 41724), (2196, 37297), (2223, 36844), (2318, 35334), (2379, 34428), (2718, 30134), (2869, 28548), (2964, 27633), (3172, 25821), (3477, 23556), (3926, 20862), (4446, 18422), (4636, 17667), (4758, 17214), (5436, 15067), (5738, 14274), (5889, 13908), (6954, 11778), (7137, 11476), (7852, 10431), (8607, 9516), (8892, 9211)]