28379988

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8663}}^1$

素因数の和:8693

約数の個数: 72

約数和(自身を含む): 88303488

約数和(自身を除く): 59923500

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 156, 182, 234, 252, 273, 364, 468, 546, 819, 1092, 1638, 3276, 8663, 17326, 25989, 34652, 51978, 60641, 77967, 103956, 112619, 121282, 155934, 181923, 225238, 242564, 311868, 337857, 363846, 450476, 545769, 675714, 727692, 788333, 1013571, 1091538, 1351428, 1576666, 2027142, 2183076, 2364999, 3153332, 4054284, 4729998, 7094997, 9459996, 14189994, 28379988]

約数ペア:

[(1, 28379988), (2, 14189994), (3, 9459996), (4, 7094997), (6, 4729998), (7, 4054284), (9, 3153332), (12, 2364999), (13, 2183076), (14, 2027142), (18, 1576666), (21, 1351428), (26, 1091538), (28, 1013571), (36, 788333), (39, 727692), (42, 675714), (52, 545769), (63, 450476), (78, 363846), (84, 337857), (91, 311868), (117, 242564), (126, 225238), (156, 181923), (182, 155934), (234, 121282), (252, 112619), (273, 103956), (364, 77967), (468, 60641), (546, 51978), (819, 34652), (1092, 25989), (1638, 17326), (3276, 8663)]