81145600

素因数分解:

$2^8\times 5^2\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:466

約数の個数: 108

約数和(自身を含む): 207833920

約数和(自身を除く): 126688320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 128, 155, 160, 200, 248, 256, 310, 320, 400, 409, 496, 620, 640, 775, 800, 818, 992, 1240, 1280, 1550, 1600, 1636, 1984, 2045, 2480, 3100, 3200, 3272, 3968, 4090, 4960, 6200, 6400, 6544, 7936, 8180, 9920, 10225, 12400, 12679, 13088, 16360, 19840, 20450, 24800, 25358, 26176, 32720, 39680, 40900, 49600, 50716, 52352, 63395, 65440, 81800, 99200, 101432, 104704, 126790, 130880, 163600, 198400, 202864, 253580, 261760, 316975, 327200, 405728, 507160, 523520, 633950, 654400, 811456, 1014320, 1267900, 1308800, 1622912, 2028640, 2535800, 2617600, 3245824, 4057280, 5071600, 8114560, 10143200, 16229120, 20286400, 40572800, 81145600]

約数ペア:

[(1, 81145600), (2, 40572800), (4, 20286400), (5, 16229120), (8, 10143200), (10, 8114560), (16, 5071600), (20, 4057280), (25, 3245824), (31, 2617600), (32, 2535800), (40, 2028640), (50, 1622912), (62, 1308800), (64, 1267900), (80, 1014320), (100, 811456), (124, 654400), (128, 633950), (155, 523520), (160, 507160), (200, 405728), (248, 327200), (256, 316975), (310, 261760), (320, 253580), (400, 202864), (409, 198400), (496, 163600), (620, 130880), (640, 126790), (775, 104704), (800, 101432), (818, 99200), (992, 81800), (1240, 65440), (1280, 63395), (1550, 52352), (1600, 50716), (1636, 49600), (1984, 40900), (2045, 39680), (2480, 32720), (3100, 26176), (3200, 25358), (3272, 24800), (3968, 20450), (4090, 19840), (4960, 16360), (6200, 13088), (6400, 12679), (6544, 12400), (7936, 10225), (8180, 9920)]