1321840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:98

約数の個数: 80

約数和(自身を含む): 3499776

約数和(自身を除く): 2177936

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 41, 52, 62, 65, 80, 82, 104, 124, 130, 155, 164, 205, 208, 248, 260, 310, 328, 403, 410, 496, 520, 533, 620, 656, 806, 820, 1040, 1066, 1240, 1271, 1612, 1640, 2015, 2132, 2480, 2542, 2665, 3224, 3280, 4030, 4264, 5084, 5330, 6355, 6448, 8060, 8528, 10168, 10660, 12710, 16120, 16523, 20336, 21320, 25420, 32240, 33046, 42640, 50840, 66092, 82615, 101680, 132184, 165230, 264368, 330460, 660920, 1321840]

約数ペア:

[(1, 1321840), (2, 660920), (4, 330460), (5, 264368), (8, 165230), (10, 132184), (13, 101680), (16, 82615), (20, 66092), (26, 50840), (31, 42640), (40, 33046), (41, 32240), (52, 25420), (62, 21320), (65, 20336), (80, 16523), (82, 16120), (104, 12710), (124, 10660), (130, 10168), (155, 8528), (164, 8060), (205, 6448), (208, 6355), (248, 5330), (260, 5084), (310, 4264), (328, 4030), (403, 3280), (410, 3224), (496, 2665), (520, 2542), (533, 2480), (620, 2132), (656, 2015), (806, 1640), (820, 1612), (1040, 1271), (1066, 1240)]