21917610

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1$

素因数の和:181

約数の個数: 144

約数和(自身を含む): 67830048

約数和(自身を除く): 45912438

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 13, 15, 18, 22, 26, 30, 33, 39, 45, 55, 65, 66, 78, 90, 99, 110, 117, 130, 131, 143, 165, 169, 195, 198, 234, 262, 286, 330, 338, 390, 393, 429, 495, 507, 585, 655, 715, 786, 845, 858, 990, 1014, 1170, 1179, 1287, 1310, 1430, 1441, 1521, 1690, 1703, 1859, 1965, 2145, 2358, 2535, 2574, 2882, 3042, 3406, 3718, 3930, 4290, 4323, 5070, 5109, 5577, 5895, 6435, 7205, 7605, 8515, 8646, 9295, 10218, 11154, 11790, 12870, 12969, 14410, 15210, 15327, 16731, 17030, 18590, 18733, 21615, 22139, 25545, 25938, 27885, 30654, 33462, 37466, 43230, 44278, 51090, 55770, 56199, 64845, 66417, 76635, 83655, 93665, 110695, 112398, 129690, 132834, 153270, 167310, 168597, 187330, 199251, 221390, 243529, 280995, 332085, 337194, 398502, 487058, 561990, 664170, 730587, 842985, 996255, 1217645, 1461174, 1685970, 1992510, 2191761, 2435290, 3652935, 4383522, 7305870, 10958805, 21917610]

約数ペア:

[(1, 21917610), (2, 10958805), (3, 7305870), (5, 4383522), (6, 3652935), (9, 2435290), (10, 2191761), (11, 1992510), (13, 1685970), (15, 1461174), (18, 1217645), (22, 996255), (26, 842985), (30, 730587), (33, 664170), (39, 561990), (45, 487058), (55, 398502), (65, 337194), (66, 332085), (78, 280995), (90, 243529), (99, 221390), (110, 199251), (117, 187330), (130, 168597), (131, 167310), (143, 153270), (165, 132834), (169, 129690), (195, 112398), (198, 110695), (234, 93665), (262, 83655), (286, 76635), (330, 66417), (338, 64845), (390, 56199), (393, 55770), (429, 51090), (495, 44278), (507, 43230), (585, 37466), (655, 33462), (715, 30654), (786, 27885), (845, 25938), (858, 25545), (990, 22139), (1014, 21615), (1170, 18733), (1179, 18590), (1287, 17030), (1310, 16731), (1430, 15327), (1441, 15210), (1521, 14410), (1690, 12969), (1703, 12870), (1859, 11790), (1965, 11154), (2145, 10218), (2358, 9295), (2535, 8646), (2574, 8515), (2882, 7605), (3042, 7205), (3406, 6435), (3718, 5895), (3930, 5577), (4290, 5109), (4323, 5070)]