20559200

素因数分解:

$2^5\times 5^2\times {\mathrm{31}}^1\times {\mathrm{829}}^1$

素因数の和:880

約数の個数: 72

約数和(自身を含む): 51871680

約数和(自身を除く): 31312480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 100, 124, 155, 160, 200, 248, 310, 400, 496, 620, 775, 800, 829, 992, 1240, 1550, 1658, 2480, 3100, 3316, 4145, 4960, 6200, 6632, 8290, 12400, 13264, 16580, 20725, 24800, 25699, 26528, 33160, 41450, 51398, 66320, 82900, 102796, 128495, 132640, 165800, 205592, 256990, 331600, 411184, 513980, 642475, 663200, 822368, 1027960, 1284950, 2055920, 2569900, 4111840, 5139800, 10279600, 20559200]

約数ペア:

[(1, 20559200), (2, 10279600), (4, 5139800), (5, 4111840), (8, 2569900), (10, 2055920), (16, 1284950), (20, 1027960), (25, 822368), (31, 663200), (32, 642475), (40, 513980), (50, 411184), (62, 331600), (80, 256990), (100, 205592), (124, 165800), (155, 132640), (160, 128495), (200, 102796), (248, 82900), (310, 66320), (400, 51398), (496, 41450), (620, 33160), (775, 26528), (800, 25699), (829, 24800), (992, 20725), (1240, 16580), (1550, 13264), (1658, 12400), (2480, 8290), (3100, 6632), (3316, 6200), (4145, 4960)]