21304140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{191}}^1$

素因数の和:240

約数の個数: 144

約数和(自身を含む): 70834176

約数和(自身を除く): 49530036

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 39, 44, 52, 55, 60, 65, 66, 78, 110, 130, 132, 143, 156, 165, 169, 191, 195, 220, 260, 286, 330, 338, 382, 390, 429, 507, 572, 573, 660, 676, 715, 764, 780, 845, 858, 955, 1014, 1146, 1430, 1690, 1716, 1859, 1910, 2028, 2101, 2145, 2292, 2483, 2535, 2860, 2865, 3380, 3718, 3820, 4202, 4290, 4966, 5070, 5577, 5730, 6303, 7436, 7449, 8404, 8580, 9295, 9932, 10140, 10505, 11154, 11460, 12415, 12606, 14898, 18590, 21010, 22308, 24830, 25212, 27313, 27885, 29796, 31515, 32279, 37180, 37245, 42020, 49660, 54626, 55770, 63030, 64558, 74490, 81939, 96837, 109252, 111540, 126060, 129116, 136565, 148980, 161395, 163878, 193674, 273130, 322790, 327756, 355069, 387348, 409695, 484185, 546260, 645580, 710138, 819390, 968370, 1065207, 1420276, 1638780, 1775345, 1936740, 2130414, 3550690, 4260828, 5326035, 7101380, 10652070, 21304140]

約数ペア:

[(1, 21304140), (2, 10652070), (3, 7101380), (4, 5326035), (5, 4260828), (6, 3550690), (10, 2130414), (11, 1936740), (12, 1775345), (13, 1638780), (15, 1420276), (20, 1065207), (22, 968370), (26, 819390), (30, 710138), (33, 645580), (39, 546260), (44, 484185), (52, 409695), (55, 387348), (60, 355069), (65, 327756), (66, 322790), (78, 273130), (110, 193674), (130, 163878), (132, 161395), (143, 148980), (156, 136565), (165, 129116), (169, 126060), (191, 111540), (195, 109252), (220, 96837), (260, 81939), (286, 74490), (330, 64558), (338, 63030), (382, 55770), (390, 54626), (429, 49660), (507, 42020), (572, 37245), (573, 37180), (660, 32279), (676, 31515), (715, 29796), (764, 27885), (780, 27313), (845, 25212), (858, 24830), (955, 22308), (1014, 21010), (1146, 18590), (1430, 14898), (1690, 12606), (1716, 12415), (1859, 11460), (1910, 11154), (2028, 10505), (2101, 10140), (2145, 9932), (2292, 9295), (2483, 8580), (2535, 8404), (2860, 7449), (2865, 7436), (3380, 6303), (3718, 5730), (3820, 5577), (4202, 5070), (4290, 4966)]