19516400

素因数分解:

$2^4\times 5^2\times {\mathrm{97}}^1\times {\mathrm{503}}^1$

素因数の和:618

約数の個数: 60

約数和(自身を含む): 47465712

約数和(自身を除く): 27949312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 97, 100, 194, 200, 388, 400, 485, 503, 776, 970, 1006, 1552, 1940, 2012, 2425, 2515, 3880, 4024, 4850, 5030, 7760, 8048, 9700, 10060, 12575, 19400, 20120, 25150, 38800, 40240, 48791, 50300, 97582, 100600, 195164, 201200, 243955, 390328, 487910, 780656, 975820, 1219775, 1951640, 2439550, 3903280, 4879100, 9758200, 19516400]

約数ペア:

[(1, 19516400), (2, 9758200), (4, 4879100), (5, 3903280), (8, 2439550), (10, 1951640), (16, 1219775), (20, 975820), (25, 780656), (40, 487910), (50, 390328), (80, 243955), (97, 201200), (100, 195164), (194, 100600), (200, 97582), (388, 50300), (400, 48791), (485, 40240), (503, 38800), (776, 25150), (970, 20120), (1006, 19400), (1552, 12575), (1940, 10060), (2012, 9700), (2425, 8048), (2515, 7760), (3880, 5030), (4024, 4850)]