200997020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{317}}^1\times {\mathrm{647}}^1$

素因数の和:987

約数の個数: 72

約数和(自身を含む): 493317216

約数和(自身を除く): 292320196

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 317, 490, 634, 647, 980, 1268, 1294, 1585, 2219, 2588, 3170, 3235, 4438, 4529, 6340, 6470, 8876, 9058, 11095, 12940, 15533, 18116, 22190, 22645, 31066, 31703, 44380, 45290, 62132, 63406, 77665, 90580, 126812, 155330, 158515, 205099, 310660, 317030, 410198, 634060, 820396, 1025495, 1435693, 2050990, 2871386, 4101980, 5742772, 7178465, 10049851, 14356930, 20099702, 28713860, 40199404, 50249255, 100498510, 200997020]

約数ペア:

[(1, 200997020), (2, 100498510), (4, 50249255), (5, 40199404), (7, 28713860), (10, 20099702), (14, 14356930), (20, 10049851), (28, 7178465), (35, 5742772), (49, 4101980), (70, 2871386), (98, 2050990), (140, 1435693), (196, 1025495), (245, 820396), (317, 634060), (490, 410198), (634, 317030), (647, 310660), (980, 205099), (1268, 158515), (1294, 155330), (1585, 126812), (2219, 90580), (2588, 77665), (3170, 63406), (3235, 62132), (4438, 45290), (4529, 44380), (6340, 31703), (6470, 31066), (8876, 22645), (9058, 22190), (11095, 18116), (12940, 15533)]