28998180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:234

約数の個数: 144

約数和(自身を含む): 94785600

約数和(自身を除く): 65787420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 61, 76, 90, 95, 114, 122, 139, 171, 180, 183, 190, 228, 244, 278, 285, 305, 342, 366, 380, 417, 549, 556, 570, 610, 684, 695, 732, 834, 855, 915, 1098, 1140, 1159, 1220, 1251, 1390, 1668, 1710, 1830, 2085, 2196, 2318, 2502, 2641, 2745, 2780, 3420, 3477, 3660, 4170, 4636, 5004, 5282, 5490, 5795, 6255, 6954, 7923, 8340, 8479, 10431, 10564, 10980, 11590, 12510, 13205, 13908, 15846, 16958, 17385, 20862, 23180, 23769, 25020, 25437, 26410, 31692, 33916, 34770, 39615, 41724, 42395, 47538, 50874, 52155, 52820, 69540, 76311, 79230, 84790, 95076, 101748, 104310, 118845, 127185, 152622, 158460, 161101, 169580, 208620, 237690, 254370, 305244, 322202, 381555, 475380, 483303, 508740, 644404, 763110, 805505, 966606, 1449909, 1526220, 1611010, 1933212, 2416515, 2899818, 3222020, 4833030, 5799636, 7249545, 9666060, 14499090, 28998180]

約数ペア:

[(1, 28998180), (2, 14499090), (3, 9666060), (4, 7249545), (5, 5799636), (6, 4833030), (9, 3222020), (10, 2899818), (12, 2416515), (15, 1933212), (18, 1611010), (19, 1526220), (20, 1449909), (30, 966606), (36, 805505), (38, 763110), (45, 644404), (57, 508740), (60, 483303), (61, 475380), (76, 381555), (90, 322202), (95, 305244), (114, 254370), (122, 237690), (139, 208620), (171, 169580), (180, 161101), (183, 158460), (190, 152622), (228, 127185), (244, 118845), (278, 104310), (285, 101748), (305, 95076), (342, 84790), (366, 79230), (380, 76311), (417, 69540), (549, 52820), (556, 52155), (570, 50874), (610, 47538), (684, 42395), (695, 41724), (732, 39615), (834, 34770), (855, 33916), (915, 31692), (1098, 26410), (1140, 25437), (1159, 25020), (1220, 23769), (1251, 23180), (1390, 20862), (1668, 17385), (1710, 16958), (1830, 15846), (2085, 13908), (2196, 13205), (2318, 12510), (2502, 11590), (2641, 10980), (2745, 10564), (2780, 10431), (3420, 8479), (3477, 8340), (3660, 7923), (4170, 6954), (4636, 6255), (5004, 5795), (5282, 5490)]