12861945

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:111

約数の個数: 72

約数和(自身を含む): 25286976

約数和(自身を除く): 12425031

約数列:

[1, 3, 5, 9, 15, 17, 23, 43, 45, 51, 69, 85, 115, 129, 153, 207, 215, 255, 289, 345, 387, 391, 645, 731, 765, 867, 989, 1035, 1173, 1445, 1935, 1955, 2193, 2601, 2967, 3519, 3655, 4335, 4945, 5865, 6579, 6647, 8901, 10965, 12427, 13005, 14835, 16813, 17595, 19941, 32895, 33235, 37281, 44505, 50439, 59823, 62135, 84065, 99705, 111843, 151317, 186405, 252195, 285821, 299115, 559215, 756585, 857463, 1429105, 2572389, 4287315, 12861945]

約数ペア:

[(1, 12861945), (3, 4287315), (5, 2572389), (9, 1429105), (15, 857463), (17, 756585), (23, 559215), (43, 299115), (45, 285821), (51, 252195), (69, 186405), (85, 151317), (115, 111843), (129, 99705), (153, 84065), (207, 62135), (215, 59823), (255, 50439), (289, 44505), (345, 37281), (387, 33235), (391, 32895), (645, 19941), (731, 17595), (765, 16813), (867, 14835), (989, 13005), (1035, 12427), (1173, 10965), (1445, 8901), (1935, 6647), (1955, 6579), (2193, 5865), (2601, 4945), (2967, 4335), (3519, 3655)]