20447600

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:163

約数の個数: 120

約数和(自身を含む): 54246528

約数和(自身を除く): 33798928

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 31, 34, 40, 50, 62, 68, 80, 85, 97, 100, 124, 136, 155, 170, 194, 200, 248, 272, 310, 340, 388, 400, 425, 485, 496, 527, 620, 680, 775, 776, 850, 970, 1054, 1240, 1360, 1550, 1552, 1649, 1700, 1940, 2108, 2425, 2480, 2635, 3007, 3100, 3298, 3400, 3880, 4216, 4850, 5270, 6014, 6200, 6596, 6800, 7760, 8245, 8432, 9700, 10540, 12028, 12400, 13175, 13192, 15035, 16490, 19400, 21080, 24056, 26350, 26384, 30070, 32980, 38800, 41225, 42160, 48112, 51119, 52700, 60140, 65960, 75175, 82450, 102238, 105400, 120280, 131920, 150350, 164900, 204476, 210800, 240560, 255595, 300700, 329800, 408952, 511190, 601400, 659600, 817904, 1022380, 1202800, 1277975, 2044760, 2555950, 4089520, 5111900, 10223800, 20447600]

約数ペア:

[(1, 20447600), (2, 10223800), (4, 5111900), (5, 4089520), (8, 2555950), (10, 2044760), (16, 1277975), (17, 1202800), (20, 1022380), (25, 817904), (31, 659600), (34, 601400), (40, 511190), (50, 408952), (62, 329800), (68, 300700), (80, 255595), (85, 240560), (97, 210800), (100, 204476), (124, 164900), (136, 150350), (155, 131920), (170, 120280), (194, 105400), (200, 102238), (248, 82450), (272, 75175), (310, 65960), (340, 60140), (388, 52700), (400, 51119), (425, 48112), (485, 42160), (496, 41225), (527, 38800), (620, 32980), (680, 30070), (775, 26384), (776, 26350), (850, 24056), (970, 21080), (1054, 19400), (1240, 16490), (1360, 15035), (1550, 13192), (1552, 13175), (1649, 12400), (1700, 12028), (1940, 10540), (2108, 9700), (2425, 8432), (2480, 8245), (2635, 7760), (3007, 6800), (3100, 6596), (3298, 6200), (3400, 6014), (3880, 5270), (4216, 4850)]