278784640

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:310

約数の個数: 128

約数和(自身を含む): 699307920

約数和(自身を除く): 420523280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 61, 64, 74, 80, 122, 128, 148, 160, 185, 193, 244, 296, 305, 320, 370, 386, 488, 592, 610, 640, 740, 772, 965, 976, 1184, 1220, 1480, 1544, 1930, 1952, 2257, 2368, 2440, 2960, 3088, 3860, 3904, 4514, 4736, 4880, 5920, 6176, 7141, 7720, 7808, 9028, 9760, 11285, 11773, 11840, 12352, 14282, 15440, 18056, 19520, 22570, 23546, 23680, 24704, 28564, 30880, 35705, 36112, 39040, 45140, 47092, 57128, 58865, 61760, 71410, 72224, 90280, 94184, 114256, 117730, 123520, 142820, 144448, 180560, 188368, 228512, 235460, 285640, 288896, 361120, 376736, 435601, 457024, 470920, 571280, 722240, 753472, 871202, 914048, 941840, 1142560, 1444480, 1506944, 1742404, 1883680, 2178005, 2285120, 3484808, 3767360, 4356010, 4570240, 6969616, 7534720, 8712020, 13939232, 17424040, 27878464, 34848080, 55756928, 69696160, 139392320, 278784640]

約数ペア:

[(1, 278784640), (2, 139392320), (4, 69696160), (5, 55756928), (8, 34848080), (10, 27878464), (16, 17424040), (20, 13939232), (32, 8712020), (37, 7534720), (40, 6969616), (61, 4570240), (64, 4356010), (74, 3767360), (80, 3484808), (122, 2285120), (128, 2178005), (148, 1883680), (160, 1742404), (185, 1506944), (193, 1444480), (244, 1142560), (296, 941840), (305, 914048), (320, 871202), (370, 753472), (386, 722240), (488, 571280), (592, 470920), (610, 457024), (640, 435601), (740, 376736), (772, 361120), (965, 288896), (976, 285640), (1184, 235460), (1220, 228512), (1480, 188368), (1544, 180560), (1930, 144448), (1952, 142820), (2257, 123520), (2368, 117730), (2440, 114256), (2960, 94184), (3088, 90280), (3860, 72224), (3904, 71410), (4514, 61760), (4736, 58865), (4880, 57128), (5920, 47092), (6176, 45140), (7141, 39040), (7720, 36112), (7808, 35705), (9028, 30880), (9760, 28564), (11285, 24704), (11773, 23680), (11840, 23546), (12352, 22570), (14282, 19520), (15440, 18056)]