19923405

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:170

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 16571955

約数列:

[1, 3, 5, 15, 17, 23, 43, 51, 69, 79, 85, 115, 129, 215, 237, 255, 345, 391, 395, 645, 731, 989, 1173, 1185, 1343, 1817, 1955, 2193, 2967, 3397, 3655, 4029, 4945, 5451, 5865, 6715, 9085, 10191, 10965, 14835, 16813, 16985, 20145, 27255, 30889, 50439, 50955, 57749, 78131, 84065, 92667, 154445, 173247, 234393, 252195, 288745, 390655, 463335, 866235, 1171965, 1328227, 3984681, 6641135, 19923405]

約数ペア:

[(1, 19923405), (3, 6641135), (5, 3984681), (15, 1328227), (17, 1171965), (23, 866235), (43, 463335), (51, 390655), (69, 288745), (79, 252195), (85, 234393), (115, 173247), (129, 154445), (215, 92667), (237, 84065), (255, 78131), (345, 57749), (391, 50955), (395, 50439), (645, 30889), (731, 27255), (989, 20145), (1173, 16985), (1185, 16813), (1343, 14835), (1817, 10965), (1955, 10191), (2193, 9085), (2967, 6715), (3397, 5865), (3655, 5451), (4029, 4945)]