31578456

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{761}}^1$

素因数の和:809

約数の個数: 128

約数和(自身を含む): 102412800

約数和(自身を除く): 70834344

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 19, 21, 24, 26, 28, 38, 39, 42, 52, 56, 57, 76, 78, 84, 91, 104, 114, 133, 152, 156, 168, 182, 228, 247, 266, 273, 312, 364, 399, 456, 494, 532, 546, 728, 741, 761, 798, 988, 1064, 1092, 1482, 1522, 1596, 1729, 1976, 2184, 2283, 2964, 3044, 3192, 3458, 4566, 5187, 5327, 5928, 6088, 6916, 9132, 9893, 10374, 10654, 13832, 14459, 15981, 18264, 19786, 20748, 21308, 28918, 29679, 31962, 39572, 41496, 42616, 43377, 57836, 59358, 63924, 69251, 79144, 86754, 101213, 115672, 118716, 127848, 138502, 173508, 187967, 202426, 207753, 237432, 277004, 303639, 347016, 375934, 404852, 415506, 554008, 563901, 607278, 751868, 809704, 831012, 1127802, 1214556, 1315769, 1503736, 1662024, 2255604, 2429112, 2631538, 3947307, 4511208, 5263076, 7894614, 10526152, 15789228, 31578456]

約数ペア:

[(1, 31578456), (2, 15789228), (3, 10526152), (4, 7894614), (6, 5263076), (7, 4511208), (8, 3947307), (12, 2631538), (13, 2429112), (14, 2255604), (19, 1662024), (21, 1503736), (24, 1315769), (26, 1214556), (28, 1127802), (38, 831012), (39, 809704), (42, 751868), (52, 607278), (56, 563901), (57, 554008), (76, 415506), (78, 404852), (84, 375934), (91, 347016), (104, 303639), (114, 277004), (133, 237432), (152, 207753), (156, 202426), (168, 187967), (182, 173508), (228, 138502), (247, 127848), (266, 118716), (273, 115672), (312, 101213), (364, 86754), (399, 79144), (456, 69251), (494, 63924), (532, 59358), (546, 57836), (728, 43377), (741, 42616), (761, 41496), (798, 39572), (988, 31962), (1064, 29679), (1092, 28918), (1482, 21308), (1522, 20748), (1596, 19786), (1729, 18264), (1976, 15981), (2184, 14459), (2283, 13832), (2964, 10654), (3044, 10374), (3192, 9893), (3458, 9132), (4566, 6916), (5187, 6088), (5327, 5928)]