21398104

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:82

約数の個数: 144

約数和(自身を含む): 56327400

約数和(自身を除く): 34929296

約数列:

[1, 2, 4, 7, 8, 13, 14, 17, 19, 26, 28, 34, 38, 49, 52, 56, 68, 76, 91, 98, 104, 119, 133, 136, 152, 169, 182, 196, 221, 238, 247, 266, 323, 338, 364, 392, 442, 476, 494, 532, 637, 646, 676, 728, 833, 884, 931, 952, 988, 1064, 1183, 1274, 1292, 1352, 1547, 1666, 1729, 1768, 1862, 1976, 2261, 2366, 2548, 2584, 2873, 3094, 3211, 3332, 3458, 3724, 4199, 4522, 4732, 5096, 5746, 6188, 6422, 6664, 6916, 7448, 8281, 8398, 9044, 9464, 10829, 11492, 12103, 12376, 12844, 13832, 15827, 16562, 16796, 18088, 20111, 21658, 22477, 22984, 24206, 25688, 29393, 31654, 33124, 33592, 40222, 43316, 44954, 48412, 54587, 58786, 63308, 66248, 80444, 86632, 89908, 96824, 109174, 117572, 126616, 140777, 157339, 160888, 179816, 205751, 218348, 235144, 281554, 314678, 382109, 411502, 436696, 563108, 629356, 764218, 823004, 1126216, 1258712, 1528436, 1646008, 2674763, 3056872, 5349526, 10699052, 21398104]

約数ペア:

[(1, 21398104), (2, 10699052), (4, 5349526), (7, 3056872), (8, 2674763), (13, 1646008), (14, 1528436), (17, 1258712), (19, 1126216), (26, 823004), (28, 764218), (34, 629356), (38, 563108), (49, 436696), (52, 411502), (56, 382109), (68, 314678), (76, 281554), (91, 235144), (98, 218348), (104, 205751), (119, 179816), (133, 160888), (136, 157339), (152, 140777), (169, 126616), (182, 117572), (196, 109174), (221, 96824), (238, 89908), (247, 86632), (266, 80444), (323, 66248), (338, 63308), (364, 58786), (392, 54587), (442, 48412), (476, 44954), (494, 43316), (532, 40222), (637, 33592), (646, 33124), (676, 31654), (728, 29393), (833, 25688), (884, 24206), (931, 22984), (952, 22477), (988, 21658), (1064, 20111), (1183, 18088), (1274, 16796), (1292, 16562), (1352, 15827), (1547, 13832), (1666, 12844), (1729, 12376), (1768, 12103), (1862, 11492), (1976, 10829), (2261, 9464), (2366, 9044), (2548, 8398), (2584, 8281), (2873, 7448), (3094, 6916), (3211, 6664), (3332, 6422), (3458, 6188), (3724, 5746), (4199, 5096), (4522, 4732)]