217565440

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5483}}^1$

素因数の和:5535

約数の個数: 72

約数和(自身を含む): 538046208

約数和(自身を除く): 320480768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 5483, 7936, 9920, 10966, 19840, 21932, 27415, 39680, 43864, 54830, 87728, 109660, 169973, 175456, 219320, 339946, 350912, 438640, 679892, 701824, 849865, 877280, 1359784, 1403648, 1699730, 1754560, 2719568, 3399460, 3509120, 5439136, 6798920, 7018240, 10878272, 13597840, 21756544, 27195680, 43513088, 54391360, 108782720, 217565440]

約数ペア:

[(1, 217565440), (2, 108782720), (4, 54391360), (5, 43513088), (8, 27195680), (10, 21756544), (16, 13597840), (20, 10878272), (31, 7018240), (32, 6798920), (40, 5439136), (62, 3509120), (64, 3399460), (80, 2719568), (124, 1754560), (128, 1699730), (155, 1403648), (160, 1359784), (248, 877280), (256, 849865), (310, 701824), (320, 679892), (496, 438640), (620, 350912), (640, 339946), (992, 219320), (1240, 175456), (1280, 169973), (1984, 109660), (2480, 87728), (3968, 54830), (4960, 43864), (5483, 39680), (7936, 27415), (9920, 21932), (10966, 19840)]