19440520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1$

素因数の和:175

約数の個数: 128

約数和(自身を含む): 53187840

約数和(自身を除く): 33747320

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 23, 34, 40, 44, 46, 55, 68, 85, 88, 92, 110, 113, 115, 136, 170, 184, 187, 220, 226, 230, 253, 340, 374, 391, 440, 452, 460, 506, 565, 680, 748, 782, 904, 920, 935, 1012, 1130, 1243, 1265, 1496, 1564, 1870, 1921, 1955, 2024, 2260, 2486, 2530, 2599, 3128, 3740, 3842, 3910, 4301, 4520, 4972, 5060, 5198, 6215, 7480, 7684, 7820, 8602, 9605, 9944, 10120, 10396, 12430, 12995, 15368, 15640, 17204, 19210, 20792, 21131, 21505, 24860, 25990, 28589, 34408, 38420, 42262, 43010, 44183, 49720, 51980, 57178, 76840, 84524, 86020, 88366, 103960, 105655, 114356, 142945, 169048, 172040, 176732, 211310, 220915, 228712, 285890, 353464, 422620, 441830, 486013, 571780, 845240, 883660, 972026, 1143560, 1767320, 1944052, 2430065, 3888104, 4860130, 9720260, 19440520]

約数ペア:

[(1, 19440520), (2, 9720260), (4, 4860130), (5, 3888104), (8, 2430065), (10, 1944052), (11, 1767320), (17, 1143560), (20, 972026), (22, 883660), (23, 845240), (34, 571780), (40, 486013), (44, 441830), (46, 422620), (55, 353464), (68, 285890), (85, 228712), (88, 220915), (92, 211310), (110, 176732), (113, 172040), (115, 169048), (136, 142945), (170, 114356), (184, 105655), (187, 103960), (220, 88366), (226, 86020), (230, 84524), (253, 76840), (340, 57178), (374, 51980), (391, 49720), (440, 44183), (452, 43010), (460, 42262), (506, 38420), (565, 34408), (680, 28589), (748, 25990), (782, 24860), (904, 21505), (920, 21131), (935, 20792), (1012, 19210), (1130, 17204), (1243, 15640), (1265, 15368), (1496, 12995), (1564, 12430), (1870, 10396), (1921, 10120), (1955, 9944), (2024, 9605), (2260, 8602), (2486, 7820), (2530, 7684), (2599, 7480), (3128, 6215), (3740, 5198), (3842, 5060), (3910, 4972), (4301, 4520)]