278984960

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{12821}}^1$

素因数の和:12859

約数の個数: 72

約数和(自身を含む): 707620536

約数和(自身を除く): 428635576

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 1088, 1280, 1360, 2176, 2720, 4352, 5440, 10880, 12821, 21760, 25642, 51284, 64105, 102568, 128210, 205136, 217957, 256420, 410272, 435914, 512840, 820544, 871828, 1025680, 1089785, 1641088, 1743656, 2051360, 2179570, 3282176, 3487312, 4102720, 4359140, 6974624, 8205440, 8718280, 13949248, 16410880, 17436560, 27898496, 34873120, 55796992, 69746240, 139492480, 278984960]

約数ペア:

[(1, 278984960), (2, 139492480), (4, 69746240), (5, 55796992), (8, 34873120), (10, 27898496), (16, 17436560), (17, 16410880), (20, 13949248), (32, 8718280), (34, 8205440), (40, 6974624), (64, 4359140), (68, 4102720), (80, 3487312), (85, 3282176), (128, 2179570), (136, 2051360), (160, 1743656), (170, 1641088), (256, 1089785), (272, 1025680), (320, 871828), (340, 820544), (544, 512840), (640, 435914), (680, 410272), (1088, 256420), (1280, 217957), (1360, 205136), (2176, 128210), (2720, 102568), (4352, 64105), (5440, 51284), (10880, 25642), (12821, 21760)]