19864065

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:190

約数の個数: 64

約数和(自身を含む): 36900864

約数和(自身を除く): 17036799

約数列:

[1, 3, 5, 13, 15, 23, 39, 43, 65, 69, 103, 115, 129, 195, 215, 299, 309, 345, 515, 559, 645, 897, 989, 1339, 1495, 1545, 1677, 2369, 2795, 2967, 4017, 4429, 4485, 4945, 6695, 7107, 8385, 11845, 12857, 13287, 14835, 20085, 22145, 30797, 35535, 38571, 57577, 64285, 66435, 92391, 101867, 153985, 172731, 192855, 287885, 305601, 461955, 509335, 863655, 1324271, 1528005, 3972813, 6621355, 19864065]

約数ペア:

[(1, 19864065), (3, 6621355), (5, 3972813), (13, 1528005), (15, 1324271), (23, 863655), (39, 509335), (43, 461955), (65, 305601), (69, 287885), (103, 192855), (115, 172731), (129, 153985), (195, 101867), (215, 92391), (299, 66435), (309, 64285), (345, 57577), (515, 38571), (559, 35535), (645, 30797), (897, 22145), (989, 20085), (1339, 14835), (1495, 13287), (1545, 12857), (1677, 11845), (2369, 8385), (2795, 7107), (2967, 6695), (4017, 4945), (4429, 4485)]