18490320

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:501

約数の個数: 120

約数和(自身を含む): 63264552

約数和(自身を除く): 44774232

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 61, 72, 80, 90, 120, 122, 144, 180, 183, 240, 244, 305, 360, 366, 421, 488, 549, 610, 720, 732, 842, 915, 976, 1098, 1220, 1263, 1464, 1684, 1830, 2105, 2196, 2440, 2526, 2745, 2928, 3368, 3660, 3789, 4210, 4392, 4880, 5052, 5490, 6315, 6736, 7320, 7578, 8420, 8784, 10104, 10980, 12630, 14640, 15156, 16840, 18945, 20208, 21960, 25260, 25681, 30312, 33680, 37890, 43920, 50520, 51362, 60624, 75780, 77043, 101040, 102724, 128405, 151560, 154086, 205448, 231129, 256810, 303120, 308172, 385215, 410896, 462258, 513620, 616344, 770430, 924516, 1027240, 1155645, 1232688, 1540860, 1849032, 2054480, 2311290, 3081720, 3698064, 4622580, 6163440, 9245160, 18490320]

約数ペア:

[(1, 18490320), (2, 9245160), (3, 6163440), (4, 4622580), (5, 3698064), (6, 3081720), (8, 2311290), (9, 2054480), (10, 1849032), (12, 1540860), (15, 1232688), (16, 1155645), (18, 1027240), (20, 924516), (24, 770430), (30, 616344), (36, 513620), (40, 462258), (45, 410896), (48, 385215), (60, 308172), (61, 303120), (72, 256810), (80, 231129), (90, 205448), (120, 154086), (122, 151560), (144, 128405), (180, 102724), (183, 101040), (240, 77043), (244, 75780), (305, 60624), (360, 51362), (366, 50520), (421, 43920), (488, 37890), (549, 33680), (610, 30312), (720, 25681), (732, 25260), (842, 21960), (915, 20208), (976, 18945), (1098, 16840), (1220, 15156), (1263, 14640), (1464, 12630), (1684, 10980), (1830, 10104), (2105, 8784), (2196, 8420), (2440, 7578), (2526, 7320), (2745, 6736), (2928, 6315), (3368, 5490), (3660, 5052), (3789, 4880), (4210, 4392)]