1339880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:114

約数の個数: 64

約数和(自身を含む): 3326400

約数和(自身を除く): 1986520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 43, 76, 82, 86, 95, 152, 164, 172, 190, 205, 215, 328, 344, 380, 410, 430, 760, 779, 817, 820, 860, 1558, 1634, 1640, 1720, 1763, 3116, 3268, 3526, 3895, 4085, 6232, 6536, 7052, 7790, 8170, 8815, 14104, 15580, 16340, 17630, 31160, 32680, 33497, 35260, 66994, 70520, 133988, 167485, 267976, 334970, 669940, 1339880]

約数ペア:

[(1, 1339880), (2, 669940), (4, 334970), (5, 267976), (8, 167485), (10, 133988), (19, 70520), (20, 66994), (38, 35260), (40, 33497), (41, 32680), (43, 31160), (76, 17630), (82, 16340), (86, 15580), (95, 14104), (152, 8815), (164, 8170), (172, 7790), (190, 7052), (205, 6536), (215, 6232), (328, 4085), (344, 3895), (380, 3526), (410, 3268), (430, 3116), (760, 1763), (779, 1720), (817, 1640), (820, 1634), (860, 1558)]