28580940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:232

約数の個数: 144

約数和(自身を含む): 93431520

約数和(自身を除く): 64850580

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, 137, 171, 180, 183, 190, 228, 244, 274, 285, 305, 342, 366, 380, 411, 548, 549, 570, 610, 684, 685, 732, 822, 855, 915, 1098, 1140, 1159, 1220, 1233, 1370, 1644, 1710, 1830, 2055, 2196, 2318, 2466, 2603, 2740, 2745, 3420, 3477, 3660, 4110, 4636, 4932, 5206, 5490, 5795, 6165, 6954, 7809, 8220, 8357, 10412, 10431, 10980, 11590, 12330, 13015, 13908, 15618, 16714, 17385, 20862, 23180, 23427, 24660, 25071, 26030, 31236, 33428, 34770, 39045, 41724, 41785, 46854, 50142, 52060, 52155, 69540, 75213, 78090, 83570, 93708, 100284, 104310, 117135, 125355, 150426, 156180, 158783, 167140, 208620, 234270, 250710, 300852, 317566, 376065, 468540, 476349, 501420, 635132, 752130, 793915, 952698, 1429047, 1504260, 1587830, 1905396, 2381745, 2858094, 3175660, 4763490, 5716188, 7145235, 9526980, 14290470, 28580940]

約数ペア:

[(1, 28580940), (2, 14290470), (3, 9526980), (4, 7145235), (5, 5716188), (6, 4763490), (9, 3175660), (10, 2858094), (12, 2381745), (15, 1905396), (18, 1587830), (19, 1504260), (20, 1429047), (30, 952698), (36, 793915), (38, 752130), (45, 635132), (57, 501420), (60, 476349), (61, 468540), (76, 376065), (90, 317566), (95, 300852), (114, 250710), (122, 234270), (137, 208620), (171, 167140), (180, 158783), (183, 156180), (190, 150426), (228, 125355), (244, 117135), (274, 104310), (285, 100284), (305, 93708), (342, 83570), (366, 78090), (380, 75213), (411, 69540), (548, 52155), (549, 52060), (570, 50142), (610, 46854), (684, 41785), (685, 41724), (732, 39045), (822, 34770), (855, 33428), (915, 31236), (1098, 26030), (1140, 25071), (1159, 24660), (1220, 23427), (1233, 23180), (1370, 20862), (1644, 17385), (1710, 16714), (1830, 15618), (2055, 13908), (2196, 13015), (2318, 12330), (2466, 11590), (2603, 10980), (2740, 10431), (2745, 10412), (3420, 8357), (3477, 8220), (3660, 7809), (4110, 6954), (4636, 6165), (4932, 5795), (5206, 5490)]