20542500

素因数分解:

$2^2\times 3^2\times 5^4\times {\mathrm{11}}^1\times {\mathrm{83}}^1$

素因数の和:124

約数の個数: 180

約数和(自身を含む): 71639568

約数和(自身を除く): 51097068

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 25, 30, 33, 36, 44, 45, 50, 55, 60, 66, 75, 83, 90, 99, 100, 110, 125, 132, 150, 165, 166, 180, 198, 220, 225, 249, 250, 275, 300, 330, 332, 375, 396, 415, 450, 495, 498, 500, 550, 625, 660, 747, 750, 825, 830, 900, 913, 990, 996, 1100, 1125, 1245, 1250, 1375, 1494, 1500, 1650, 1660, 1826, 1875, 1980, 2075, 2250, 2475, 2490, 2500, 2739, 2750, 2988, 3300, 3652, 3735, 3750, 4125, 4150, 4500, 4565, 4950, 4980, 5478, 5500, 5625, 6225, 6875, 7470, 7500, 8217, 8250, 8300, 9130, 9900, 10375, 10956, 11250, 12375, 12450, 13695, 13750, 14940, 16434, 16500, 18260, 18675, 20625, 20750, 22500, 22825, 24750, 24900, 27390, 27500, 31125, 32868, 37350, 41085, 41250, 41500, 45650, 49500, 51875, 54780, 61875, 62250, 68475, 74700, 82170, 82500, 91300, 93375, 103750, 114125, 123750, 124500, 136950, 155625, 164340, 186750, 205425, 207500, 228250, 247500, 273900, 311250, 342375, 373500, 410850, 456500, 466875, 570625, 622500, 684750, 821700, 933750, 1027125, 1141250, 1369500, 1711875, 1867500, 2054250, 2282500, 3423750, 4108500, 5135625, 6847500, 10271250, 20542500]

約数ペア:

[(1, 20542500), (2, 10271250), (3, 6847500), (4, 5135625), (5, 4108500), (6, 3423750), (9, 2282500), (10, 2054250), (11, 1867500), (12, 1711875), (15, 1369500), (18, 1141250), (20, 1027125), (22, 933750), (25, 821700), (30, 684750), (33, 622500), (36, 570625), (44, 466875), (45, 456500), (50, 410850), (55, 373500), (60, 342375), (66, 311250), (75, 273900), (83, 247500), (90, 228250), (99, 207500), (100, 205425), (110, 186750), (125, 164340), (132, 155625), (150, 136950), (165, 124500), (166, 123750), (180, 114125), (198, 103750), (220, 93375), (225, 91300), (249, 82500), (250, 82170), (275, 74700), (300, 68475), (330, 62250), (332, 61875), (375, 54780), (396, 51875), (415, 49500), (450, 45650), (495, 41500), (498, 41250), (500, 41085), (550, 37350), (625, 32868), (660, 31125), (747, 27500), (750, 27390), (825, 24900), (830, 24750), (900, 22825), (913, 22500), (990, 20750), (996, 20625), (1100, 18675), (1125, 18260), (1245, 16500), (1250, 16434), (1375, 14940), (1494, 13750), (1500, 13695), (1650, 12450), (1660, 12375), (1826, 11250), (1875, 10956), (1980, 10375), (2075, 9900), (2250, 9130), (2475, 8300), (2490, 8250), (2500, 8217), (2739, 7500), (2750, 7470), (2988, 6875), (3300, 6225), (3652, 5625), (3735, 5500), (3750, 5478), (4125, 4980), (4150, 4950), (4500, 4565)]