16651980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{541}}^1$

素因数の和:581

約数の個数: 120

約数和(自身を含む): 55088880

約数和(自身を除く): 38436900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 270, 285, 324, 342, 380, 405, 513, 540, 541, 570, 684, 810, 855, 1026, 1082, 1140, 1539, 1620, 1623, 1710, 2052, 2164, 2565, 2705, 3078, 3246, 3420, 4869, 5130, 5410, 6156, 6492, 7695, 8115, 9738, 10260, 10279, 10820, 14607, 15390, 16230, 19476, 20558, 24345, 29214, 30780, 30837, 32460, 41116, 43821, 48690, 51395, 58428, 61674, 73035, 87642, 92511, 97380, 102790, 123348, 146070, 154185, 175284, 185022, 205580, 219105, 277533, 292140, 308370, 370044, 438210, 462555, 555066, 616740, 832599, 876420, 925110, 1110132, 1387665, 1665198, 1850220, 2775330, 3330396, 4162995, 5550660, 8325990, 16651980]

約数ペア:

[(1, 16651980), (2, 8325990), (3, 5550660), (4, 4162995), (5, 3330396), (6, 2775330), (9, 1850220), (10, 1665198), (12, 1387665), (15, 1110132), (18, 925110), (19, 876420), (20, 832599), (27, 616740), (30, 555066), (36, 462555), (38, 438210), (45, 370044), (54, 308370), (57, 292140), (60, 277533), (76, 219105), (81, 205580), (90, 185022), (95, 175284), (108, 154185), (114, 146070), (135, 123348), (162, 102790), (171, 97380), (180, 92511), (190, 87642), (228, 73035), (270, 61674), (285, 58428), (324, 51395), (342, 48690), (380, 43821), (405, 41116), (513, 32460), (540, 30837), (541, 30780), (570, 29214), (684, 24345), (810, 20558), (855, 19476), (1026, 16230), (1082, 15390), (1140, 14607), (1539, 10820), (1620, 10279), (1623, 10260), (1710, 9738), (2052, 8115), (2164, 7695), (2565, 6492), (2705, 6156), (3078, 5410), (3246, 5130), (3420, 4869)]