204398720

素因数分解:

$2^7\times 5^1\times {\mathrm{521}}^1\times {\mathrm{613}}^1$

素因数の和:1153

約数の個数: 64

約数和(自身を含む): 490377240

約数和(自身を除く): 285978520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 521, 613, 640, 1042, 1226, 2084, 2452, 2605, 3065, 4168, 4904, 5210, 6130, 8336, 9808, 10420, 12260, 16672, 19616, 20840, 24520, 33344, 39232, 41680, 49040, 66688, 78464, 83360, 98080, 166720, 196160, 319373, 333440, 392320, 638746, 1277492, 1596865, 2554984, 3193730, 5109968, 6387460, 10219936, 12774920, 20439872, 25549840, 40879744, 51099680, 102199360, 204398720]

約数ペア:

[(1, 204398720), (2, 102199360), (4, 51099680), (5, 40879744), (8, 25549840), (10, 20439872), (16, 12774920), (20, 10219936), (32, 6387460), (40, 5109968), (64, 3193730), (80, 2554984), (128, 1596865), (160, 1277492), (320, 638746), (521, 392320), (613, 333440), (640, 319373), (1042, 196160), (1226, 166720), (2084, 98080), (2452, 83360), (2605, 78464), (3065, 66688), (4168, 49040), (4904, 41680), (5210, 39232), (6130, 33344), (8336, 24520), (9808, 20840), (10420, 19616), (12260, 16672)]