18920320

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:120

約数の個数: 128

約数和(自身を含む): 50232960

約数和(自身を除く): 31312640

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 37, 40, 47, 64, 68, 74, 80, 85, 94, 128, 136, 148, 160, 170, 185, 188, 235, 272, 296, 320, 340, 370, 376, 470, 544, 592, 629, 640, 680, 740, 752, 799, 940, 1088, 1184, 1258, 1360, 1480, 1504, 1598, 1739, 1880, 2176, 2368, 2516, 2720, 2960, 3008, 3145, 3196, 3478, 3760, 3995, 4736, 5032, 5440, 5920, 6016, 6290, 6392, 6956, 7520, 7990, 8695, 10064, 10880, 11840, 12580, 12784, 13912, 15040, 15980, 17390, 20128, 23680, 25160, 25568, 27824, 29563, 30080, 31960, 34780, 40256, 50320, 51136, 55648, 59126, 63920, 69560, 80512, 100640, 102272, 111296, 118252, 127840, 139120, 147815, 201280, 222592, 236504, 255680, 278240, 295630, 402560, 473008, 511360, 556480, 591260, 946016, 1112960, 1182520, 1892032, 2365040, 3784064, 4730080, 9460160, 18920320]

約数ペア:

[(1, 18920320), (2, 9460160), (4, 4730080), (5, 3784064), (8, 2365040), (10, 1892032), (16, 1182520), (17, 1112960), (20, 946016), (32, 591260), (34, 556480), (37, 511360), (40, 473008), (47, 402560), (64, 295630), (68, 278240), (74, 255680), (80, 236504), (85, 222592), (94, 201280), (128, 147815), (136, 139120), (148, 127840), (160, 118252), (170, 111296), (185, 102272), (188, 100640), (235, 80512), (272, 69560), (296, 63920), (320, 59126), (340, 55648), (370, 51136), (376, 50320), (470, 40256), (544, 34780), (592, 31960), (629, 30080), (640, 29563), (680, 27824), (740, 25568), (752, 25160), (799, 23680), (940, 20128), (1088, 17390), (1184, 15980), (1258, 15040), (1360, 13912), (1480, 12784), (1504, 12580), (1598, 11840), (1739, 10880), (1880, 10064), (2176, 8695), (2368, 7990), (2516, 7520), (2720, 6956), (2960, 6392), (3008, 6290), (3145, 6016), (3196, 5920), (3478, 5440), (3760, 5032), (3995, 4736)]