1389440

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 3598560

約数和(自身を除く): 2209120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 167, 208, 260, 320, 334, 416, 520, 640, 668, 832, 835, 1040, 1336, 1664, 1670, 2080, 2171, 2672, 3340, 4160, 4342, 5344, 6680, 8320, 8684, 10688, 10855, 13360, 17368, 21376, 21710, 26720, 34736, 43420, 53440, 69472, 86840, 106880, 138944, 173680, 277888, 347360, 694720, 1389440]

約数ペア:

[(1, 1389440), (2, 694720), (4, 347360), (5, 277888), (8, 173680), (10, 138944), (13, 106880), (16, 86840), (20, 69472), (26, 53440), (32, 43420), (40, 34736), (52, 26720), (64, 21710), (65, 21376), (80, 17368), (104, 13360), (128, 10855), (130, 10688), (160, 8684), (167, 8320), (208, 6680), (260, 5344), (320, 4342), (334, 4160), (416, 3340), (520, 2672), (640, 2171), (668, 2080), (832, 1670), (835, 1664), (1040, 1336)]