17721720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:350

約数の個数: 128

約数和(自身を含む): 60264000

約数和(自身を除く): 42542280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 61, 72, 90, 108, 120, 122, 135, 180, 183, 216, 244, 269, 270, 305, 360, 366, 488, 538, 540, 549, 610, 732, 807, 915, 1076, 1080, 1098, 1220, 1345, 1464, 1614, 1647, 1830, 2152, 2196, 2421, 2440, 2690, 2745, 3228, 3294, 3660, 4035, 4392, 4842, 5380, 5490, 6456, 6588, 7263, 7320, 8070, 8235, 9684, 10760, 10980, 12105, 13176, 14526, 16140, 16409, 16470, 19368, 21960, 24210, 29052, 32280, 32818, 32940, 36315, 48420, 49227, 58104, 65636, 65880, 72630, 82045, 96840, 98454, 131272, 145260, 147681, 164090, 196908, 246135, 290520, 295362, 328180, 393816, 443043, 492270, 590724, 656360, 738405, 886086, 984540, 1181448, 1476810, 1772172, 1969080, 2215215, 2953620, 3544344, 4430430, 5907240, 8860860, 17721720]

約数ペア:

[(1, 17721720), (2, 8860860), (3, 5907240), (4, 4430430), (5, 3544344), (6, 2953620), (8, 2215215), (9, 1969080), (10, 1772172), (12, 1476810), (15, 1181448), (18, 984540), (20, 886086), (24, 738405), (27, 656360), (30, 590724), (36, 492270), (40, 443043), (45, 393816), (54, 328180), (60, 295362), (61, 290520), (72, 246135), (90, 196908), (108, 164090), (120, 147681), (122, 145260), (135, 131272), (180, 98454), (183, 96840), (216, 82045), (244, 72630), (269, 65880), (270, 65636), (305, 58104), (360, 49227), (366, 48420), (488, 36315), (538, 32940), (540, 32818), (549, 32280), (610, 29052), (732, 24210), (807, 21960), (915, 19368), (1076, 16470), (1080, 16409), (1098, 16140), (1220, 14526), (1345, 13176), (1464, 12105), (1614, 10980), (1647, 10760), (1830, 9684), (2152, 8235), (2196, 8070), (2421, 7320), (2440, 7263), (2690, 6588), (2745, 6456), (3228, 5490), (3294, 5380), (3660, 4842), (4035, 4392)]