279295120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{8663}}^1$

素因数の和:8720

約数の個数: 80

約数和(自身を含む): 721953792

約数和(自身を除く): 442658672

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 8060, 8663, 16120, 17326, 32240, 34652, 43315, 69304, 86630, 112619, 138608, 173260, 225238, 268553, 346520, 450476, 537106, 563095, 693040, 900952, 1074212, 1126190, 1342765, 1801904, 2148424, 2252380, 2685530, 3491189, 4296848, 4504760, 5371060, 6982378, 9009520, 10742120, 13964756, 17455945, 21484240, 27929512, 34911890, 55859024, 69823780, 139647560, 279295120]

約数ペア:

[(1, 279295120), (2, 139647560), (4, 69823780), (5, 55859024), (8, 34911890), (10, 27929512), (13, 21484240), (16, 17455945), (20, 13964756), (26, 10742120), (31, 9009520), (40, 6982378), (52, 5371060), (62, 4504760), (65, 4296848), (80, 3491189), (104, 2685530), (124, 2252380), (130, 2148424), (155, 1801904), (208, 1342765), (248, 1126190), (260, 1074212), (310, 900952), (403, 693040), (496, 563095), (520, 537106), (620, 450476), (806, 346520), (1040, 268553), (1240, 225238), (1612, 173260), (2015, 138608), (2480, 112619), (3224, 86630), (4030, 69304), (6448, 43315), (8060, 34652), (8663, 32240), (16120, 17326)]