19904040

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4253}}^1$

素因数の和:4283

約数の個数: 96

約数和(自身を含む): 69680520

約数和(自身を除く): 49776480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4253, 4680, 8506, 12759, 17012, 21265, 25518, 34024, 38277, 42530, 51036, 55289, 63795, 76554, 85060, 102072, 110578, 127590, 153108, 165867, 170120, 191385, 221156, 255180, 276445, 306216, 331734, 382770, 442312, 497601, 510360, 552890, 663468, 765540, 829335, 995202, 1105780, 1326936, 1531080, 1658670, 1990404, 2211560, 2488005, 3317340, 3980808, 4976010, 6634680, 9952020, 19904040]

約数ペア:

[(1, 19904040), (2, 9952020), (3, 6634680), (4, 4976010), (5, 3980808), (6, 3317340), (8, 2488005), (9, 2211560), (10, 1990404), (12, 1658670), (13, 1531080), (15, 1326936), (18, 1105780), (20, 995202), (24, 829335), (26, 765540), (30, 663468), (36, 552890), (39, 510360), (40, 497601), (45, 442312), (52, 382770), (60, 331734), (65, 306216), (72, 276445), (78, 255180), (90, 221156), (104, 191385), (117, 170120), (120, 165867), (130, 153108), (156, 127590), (180, 110578), (195, 102072), (234, 85060), (260, 76554), (312, 63795), (360, 55289), (390, 51036), (468, 42530), (520, 38277), (585, 34024), (780, 25518), (936, 21265), (1170, 17012), (1560, 12759), (2340, 8506), (4253, 4680)]