253580000

素因数分解:

$2^5\times 5^4\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:470

約数の個数: 120

約数和(自身を含む): 645543360

約数和(自身を除く): 391963360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 100, 124, 125, 155, 160, 200, 248, 250, 310, 400, 409, 496, 500, 620, 625, 775, 800, 818, 992, 1000, 1240, 1250, 1550, 1636, 2000, 2045, 2480, 2500, 3100, 3272, 3875, 4000, 4090, 4960, 5000, 6200, 6544, 7750, 8180, 10000, 10225, 12400, 12679, 13088, 15500, 16360, 19375, 20000, 20450, 24800, 25358, 31000, 32720, 38750, 40900, 50716, 51125, 62000, 63395, 65440, 77500, 81800, 101432, 102250, 124000, 126790, 155000, 163600, 202864, 204500, 253580, 255625, 310000, 316975, 327200, 405728, 409000, 507160, 511250, 620000, 633950, 818000, 1014320, 1022500, 1267900, 1584875, 1636000, 2028640, 2045000, 2535800, 3169750, 4090000, 5071600, 6339500, 7924375, 8180000, 10143200, 12679000, 15848750, 25358000, 31697500, 50716000, 63395000, 126790000, 253580000]

約数ペア:

[(1, 253580000), (2, 126790000), (4, 63395000), (5, 50716000), (8, 31697500), (10, 25358000), (16, 15848750), (20, 12679000), (25, 10143200), (31, 8180000), (32, 7924375), (40, 6339500), (50, 5071600), (62, 4090000), (80, 3169750), (100, 2535800), (124, 2045000), (125, 2028640), (155, 1636000), (160, 1584875), (200, 1267900), (248, 1022500), (250, 1014320), (310, 818000), (400, 633950), (409, 620000), (496, 511250), (500, 507160), (620, 409000), (625, 405728), (775, 327200), (800, 316975), (818, 310000), (992, 255625), (1000, 253580), (1240, 204500), (1250, 202864), (1550, 163600), (1636, 155000), (2000, 126790), (2045, 124000), (2480, 102250), (2500, 101432), (3100, 81800), (3272, 77500), (3875, 65440), (4000, 63395), (4090, 62000), (4960, 51125), (5000, 50716), (6200, 40900), (6544, 38750), (7750, 32720), (8180, 31000), (10000, 25358), (10225, 24800), (12400, 20450), (12679, 20000), (13088, 19375), (15500, 16360)]