19963395

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 38438400

約数和(自身を除く): 18475005

約数列:

[1, 3, 5, 9, 15, 19, 27, 43, 45, 57, 95, 129, 135, 171, 181, 215, 285, 387, 513, 543, 645, 817, 855, 905, 1161, 1629, 1935, 2451, 2565, 2715, 3439, 4085, 4887, 5805, 7353, 7783, 8145, 10317, 12255, 17195, 22059, 23349, 24435, 30951, 36765, 38915, 51585, 70047, 92853, 110295, 116745, 147877, 154755, 210141, 350235, 443631, 464265, 739385, 1050705, 1330893, 2218155, 3992679, 6654465, 19963395]

約数ペア:

[(1, 19963395), (3, 6654465), (5, 3992679), (9, 2218155), (15, 1330893), (19, 1050705), (27, 739385), (43, 464265), (45, 443631), (57, 350235), (95, 210141), (129, 154755), (135, 147877), (171, 116745), (181, 110295), (215, 92853), (285, 70047), (387, 51585), (513, 38915), (543, 36765), (645, 30951), (817, 24435), (855, 23349), (905, 22059), (1161, 17195), (1629, 12255), (1935, 10317), (2451, 8145), (2565, 7783), (2715, 7353), (3439, 5805), (4085, 4887)]