213236480

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2731}}^1$

素因数の和:2813

約数の個数: 72

約数和(自身を含む): 519331344

約数和(自身を除く): 306094864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 610, 640, 976, 1220, 1280, 1952, 2440, 2731, 3904, 4880, 5462, 7808, 9760, 10924, 13655, 15616, 19520, 21848, 27310, 39040, 43696, 54620, 78080, 87392, 109240, 166591, 174784, 218480, 333182, 349568, 436960, 666364, 699136, 832955, 873920, 1332728, 1665910, 1747840, 2665456, 3331820, 3495680, 5330912, 6663640, 10661824, 13327280, 21323648, 26654560, 42647296, 53309120, 106618240, 213236480]

約数ペア:

[(1, 213236480), (2, 106618240), (4, 53309120), (5, 42647296), (8, 26654560), (10, 21323648), (16, 13327280), (20, 10661824), (32, 6663640), (40, 5330912), (61, 3495680), (64, 3331820), (80, 2665456), (122, 1747840), (128, 1665910), (160, 1332728), (244, 873920), (256, 832955), (305, 699136), (320, 666364), (488, 436960), (610, 349568), (640, 333182), (976, 218480), (1220, 174784), (1280, 166591), (1952, 109240), (2440, 87392), (2731, 78080), (3904, 54620), (4880, 43696), (5462, 39040), (7808, 27310), (9760, 21848), (10924, 19520), (13655, 15616)]