21006180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:266

約数の個数: 144

約数和(自身を含む): 70447104

約数和(自身を除く): 49440924

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 47, 52, 60, 65, 78, 90, 94, 117, 130, 141, 156, 180, 188, 191, 195, 234, 235, 260, 282, 382, 390, 423, 468, 470, 564, 573, 585, 611, 705, 764, 780, 846, 940, 955, 1146, 1170, 1222, 1410, 1692, 1719, 1833, 1910, 2115, 2292, 2340, 2444, 2483, 2820, 2865, 3055, 3438, 3666, 3820, 4230, 4966, 5499, 5730, 6110, 6876, 7332, 7449, 8460, 8595, 8977, 9165, 9932, 10998, 11460, 12220, 12415, 14898, 17190, 17954, 18330, 21996, 22347, 24830, 26931, 27495, 29796, 34380, 35908, 36660, 37245, 44694, 44885, 49660, 53862, 54990, 74490, 80793, 89388, 89770, 107724, 109980, 111735, 116701, 134655, 148980, 161586, 179540, 223470, 233402, 269310, 323172, 350103, 403965, 446940, 466804, 538620, 583505, 700206, 807930, 1050309, 1167010, 1400412, 1615860, 1750515, 2100618, 2334020, 3501030, 4201236, 5251545, 7002060, 10503090, 21006180]

約数ペア:

[(1, 21006180), (2, 10503090), (3, 7002060), (4, 5251545), (5, 4201236), (6, 3501030), (9, 2334020), (10, 2100618), (12, 1750515), (13, 1615860), (15, 1400412), (18, 1167010), (20, 1050309), (26, 807930), (30, 700206), (36, 583505), (39, 538620), (45, 466804), (47, 446940), (52, 403965), (60, 350103), (65, 323172), (78, 269310), (90, 233402), (94, 223470), (117, 179540), (130, 161586), (141, 148980), (156, 134655), (180, 116701), (188, 111735), (191, 109980), (195, 107724), (234, 89770), (235, 89388), (260, 80793), (282, 74490), (382, 54990), (390, 53862), (423, 49660), (468, 44885), (470, 44694), (564, 37245), (573, 36660), (585, 35908), (611, 34380), (705, 29796), (764, 27495), (780, 26931), (846, 24830), (940, 22347), (955, 21996), (1146, 18330), (1170, 17954), (1222, 17190), (1410, 14898), (1692, 12415), (1719, 12220), (1833, 11460), (1910, 10998), (2115, 9932), (2292, 9165), (2340, 8977), (2444, 8595), (2483, 8460), (2820, 7449), (2865, 7332), (3055, 6876), (3438, 6110), (3666, 5730), (3820, 5499), (4230, 4966)]