720003040

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{677}}^1$

素因数の和:749

約数の個数: 144

約数和(自身を含む): 1888300512

約数和(自身を除く): 1168297472

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 32, 34, 40, 46, 68, 80, 85, 92, 115, 136, 160, 170, 184, 230, 272, 289, 340, 368, 391, 460, 544, 578, 677, 680, 736, 782, 920, 1156, 1354, 1360, 1445, 1564, 1840, 1955, 2312, 2708, 2720, 2890, 3128, 3385, 3680, 3910, 4624, 5416, 5780, 6256, 6647, 6770, 7820, 9248, 10832, 11509, 11560, 12512, 13294, 13540, 15571, 15640, 21664, 23018, 23120, 26588, 27080, 31142, 31280, 33235, 46036, 46240, 53176, 54160, 57545, 62284, 62560, 66470, 77855, 92072, 106352, 108320, 115090, 124568, 132940, 155710, 184144, 195653, 212704, 230180, 249136, 264707, 265880, 311420, 368288, 391306, 460360, 498272, 529414, 531760, 622840, 782612, 920720, 978265, 1058828, 1063520, 1245680, 1323535, 1565224, 1841440, 1956530, 2117656, 2491360, 2647070, 3130448, 3913060, 4235312, 4500019, 5294140, 6260896, 7826120, 8470624, 9000038, 10588280, 15652240, 18000076, 21176560, 22500095, 31304480, 36000152, 42353120, 45000190, 72000304, 90000380, 144000608, 180000760, 360001520, 720003040]

約数ペア:

[(1, 720003040), (2, 360001520), (4, 180000760), (5, 144000608), (8, 90000380), (10, 72000304), (16, 45000190), (17, 42353120), (20, 36000152), (23, 31304480), (32, 22500095), (34, 21176560), (40, 18000076), (46, 15652240), (68, 10588280), (80, 9000038), (85, 8470624), (92, 7826120), (115, 6260896), (136, 5294140), (160, 4500019), (170, 4235312), (184, 3913060), (230, 3130448), (272, 2647070), (289, 2491360), (340, 2117656), (368, 1956530), (391, 1841440), (460, 1565224), (544, 1323535), (578, 1245680), (677, 1063520), (680, 1058828), (736, 978265), (782, 920720), (920, 782612), (1156, 622840), (1354, 531760), (1360, 529414), (1445, 498272), (1564, 460360), (1840, 391306), (1955, 368288), (2312, 311420), (2708, 265880), (2720, 264707), (2890, 249136), (3128, 230180), (3385, 212704), (3680, 195653), (3910, 184144), (4624, 155710), (5416, 132940), (5780, 124568), (6256, 115090), (6647, 108320), (6770, 106352), (7820, 92072), (9248, 77855), (10832, 66470), (11509, 62560), (11560, 62284), (12512, 57545), (13294, 54160), (13540, 53176), (15571, 46240), (15640, 46036), (21664, 33235), (23018, 31280), (23120, 31142), (26588, 27080)]