440420000

素因数分解:

$2^5\times 5^4\times {\mathrm{19}}^2\times {\mathrm{61}}^1$

素因数の和:129

約数の個数: 180

約数和(自身を含む): 1162273266

約数和(自身を除く): 721853266

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 61, 76, 80, 95, 100, 122, 125, 152, 160, 190, 200, 244, 250, 304, 305, 361, 380, 400, 475, 488, 500, 608, 610, 625, 722, 760, 800, 950, 976, 1000, 1159, 1220, 1250, 1444, 1520, 1525, 1805, 1900, 1952, 2000, 2318, 2375, 2440, 2500, 2888, 3040, 3050, 3610, 3800, 4000, 4636, 4750, 4880, 5000, 5776, 5795, 6100, 7220, 7600, 7625, 9025, 9272, 9500, 9760, 10000, 11552, 11590, 11875, 12200, 14440, 15200, 15250, 18050, 18544, 19000, 20000, 22021, 23180, 23750, 24400, 28880, 28975, 30500, 36100, 37088, 38000, 38125, 44042, 45125, 46360, 47500, 48800, 57760, 57950, 61000, 72200, 76000, 76250, 88084, 90250, 92720, 95000, 110105, 115900, 122000, 144400, 144875, 152500, 176168, 180500, 185440, 190000, 220210, 225625, 231800, 244000, 288800, 289750, 305000, 352336, 361000, 380000, 440420, 451250, 463600, 550525, 579500, 610000, 704672, 722000, 724375, 880840, 902500, 927200, 1101050, 1159000, 1220000, 1444000, 1448750, 1761680, 1805000, 2202100, 2318000, 2752625, 2897500, 3523360, 3610000, 4404200, 4636000, 5505250, 5795000, 7220000, 8808400, 11010500, 11590000, 13763125, 17616800, 22021000, 23180000, 27526250, 44042000, 55052500, 88084000, 110105000, 220210000, 440420000]

約数ペア:

[(1, 440420000), (2, 220210000), (4, 110105000), (5, 88084000), (8, 55052500), (10, 44042000), (16, 27526250), (19, 23180000), (20, 22021000), (25, 17616800), (32, 13763125), (38, 11590000), (40, 11010500), (50, 8808400), (61, 7220000), (76, 5795000), (80, 5505250), (95, 4636000), (100, 4404200), (122, 3610000), (125, 3523360), (152, 2897500), (160, 2752625), (190, 2318000), (200, 2202100), (244, 1805000), (250, 1761680), (304, 1448750), (305, 1444000), (361, 1220000), (380, 1159000), (400, 1101050), (475, 927200), (488, 902500), (500, 880840), (608, 724375), (610, 722000), (625, 704672), (722, 610000), (760, 579500), (800, 550525), (950, 463600), (976, 451250), (1000, 440420), (1159, 380000), (1220, 361000), (1250, 352336), (1444, 305000), (1520, 289750), (1525, 288800), (1805, 244000), (1900, 231800), (1952, 225625), (2000, 220210), (2318, 190000), (2375, 185440), (2440, 180500), (2500, 176168), (2888, 152500), (3040, 144875), (3050, 144400), (3610, 122000), (3800, 115900), (4000, 110105), (4636, 95000), (4750, 92720), (4880, 90250), (5000, 88084), (5776, 76250), (5795, 76000), (6100, 72200), (7220, 61000), (7600, 57950), (7625, 57760), (9025, 48800), (9272, 47500), (9500, 46360), (9760, 45125), (10000, 44042), (11552, 38125), (11590, 38000), (11875, 37088), (12200, 36100), (14440, 30500), (15200, 28975), (15250, 28880), (18050, 24400), (18544, 23750), (19000, 23180), (20000, 22021)]