21372912800

素因数分解:

$2^5\times 5^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{10909}}^1$

素因数の和:11039

約数の個数: 144

約数和(自身を含む): 54546508800

約数和(自身を除く): 33173596000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 79, 80, 100, 124, 155, 158, 160, 200, 248, 310, 316, 395, 400, 496, 620, 632, 775, 790, 800, 992, 1240, 1264, 1550, 1580, 1975, 2449, 2480, 2528, 3100, 3160, 3950, 4898, 4960, 6200, 6320, 7900, 9796, 10909, 12245, 12400, 12640, 15800, 19592, 21818, 24490, 24800, 31600, 39184, 43636, 48980, 54545, 61225, 63200, 78368, 87272, 97960, 109090, 122450, 174544, 195920, 218180, 244900, 272725, 338179, 349088, 391840, 436360, 489800, 545450, 676358, 861811, 872720, 979600, 1090900, 1352716, 1690895, 1723622, 1745440, 1959200, 2181800, 2705432, 3381790, 3447244, 4309055, 4363600, 5410864, 6763580, 6894488, 8454475, 8618110, 8727200, 10821728, 13527160, 13788976, 16908950, 17236220, 21545275, 26716141, 27054320, 27577952, 33817900, 34472440, 43090550, 53432282, 54108640, 67635800, 68944880, 86181100, 106864564, 133580705, 135271600, 137889760, 172362200, 213729128, 267161410, 270543200, 344724400, 427458256, 534322820, 667903525, 689448800, 854916512, 1068645640, 1335807050, 2137291280, 2671614100, 4274582560, 5343228200, 10686456400, 21372912800]

約数ペア:

[(1, 21372912800), (2, 10686456400), (4, 5343228200), (5, 4274582560), (8, 2671614100), (10, 2137291280), (16, 1335807050), (20, 1068645640), (25, 854916512), (31, 689448800), (32, 667903525), (40, 534322820), (50, 427458256), (62, 344724400), (79, 270543200), (80, 267161410), (100, 213729128), (124, 172362200), (155, 137889760), (158, 135271600), (160, 133580705), (200, 106864564), (248, 86181100), (310, 68944880), (316, 67635800), (395, 54108640), (400, 53432282), (496, 43090550), (620, 34472440), (632, 33817900), (775, 27577952), (790, 27054320), (800, 26716141), (992, 21545275), (1240, 17236220), (1264, 16908950), (1550, 13788976), (1580, 13527160), (1975, 10821728), (2449, 8727200), (2480, 8618110), (2528, 8454475), (3100, 6894488), (3160, 6763580), (3950, 5410864), (4898, 4363600), (4960, 4309055), (6200, 3447244), (6320, 3381790), (7900, 2705432), (9796, 2181800), (10909, 1959200), (12245, 1745440), (12400, 1723622), (12640, 1690895), (15800, 1352716), (19592, 1090900), (21818, 979600), (24490, 872720), (24800, 861811), (31600, 676358), (39184, 545450), (43636, 489800), (48980, 436360), (54545, 391840), (61225, 349088), (63200, 338179), (78368, 272725), (87272, 244900), (97960, 218180), (109090, 195920), (122450, 174544)]