18929520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{431}}^1$

素因数の和:511

約数の個数: 120

約数和(自身を含む): 64763712

約数和(自身を除く): 45834192

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, 431, 488, 549, 610, 720, 732, 862, 915, 976, 1098, 1220, 1293, 1464, 1724, 1830, 2155, 2196, 2440, 2586, 2745, 2928, 3448, 3660, 3879, 4310, 4392, 4880, 5172, 5490, 6465, 6896, 7320, 7758, 8620, 8784, 10344, 10980, 12930, 14640, 15516, 17240, 19395, 20688, 21960, 25860, 26291, 31032, 34480, 38790, 43920, 51720, 52582, 62064, 77580, 78873, 103440, 105164, 131455, 155160, 157746, 210328, 236619, 262910, 310320, 315492, 394365, 420656, 473238, 525820, 630984, 788730, 946476, 1051640, 1183095, 1261968, 1577460, 1892952, 2103280, 2366190, 3154920, 3785904, 4732380, 6309840, 9464760, 18929520]

約数ペア:

[(1, 18929520), (2, 9464760), (3, 6309840), (4, 4732380), (5, 3785904), (6, 3154920), (8, 2366190), (9, 2103280), (10, 1892952), (12, 1577460), (15, 1261968), (16, 1183095), (18, 1051640), (20, 946476), (24, 788730), (30, 630984), (36, 525820), (40, 473238), (45, 420656), (48, 394365), (60, 315492), (61, 310320), (72, 262910), (80, 236619), (90, 210328), (120, 157746), (122, 155160), (144, 131455), (180, 105164), (183, 103440), (240, 78873), (244, 77580), (305, 62064), (360, 52582), (366, 51720), (431, 43920), (488, 38790), (549, 34480), (610, 31032), (720, 26291), (732, 25860), (862, 21960), (915, 20688), (976, 19395), (1098, 17240), (1220, 15516), (1293, 14640), (1464, 12930), (1724, 10980), (1830, 10344), (2155, 8784), (2196, 8620), (2440, 7758), (2586, 7320), (2745, 6896), (2928, 6465), (3448, 5490), (3660, 5172), (3879, 4880), (4310, 4392)]