18544540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:299

約数の個数: 72

約数和(自身を含む): 45964800

約数和(自身を除く): 27420260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 127, 140, 149, 196, 245, 254, 298, 490, 508, 596, 635, 745, 889, 980, 1043, 1270, 1490, 1778, 2086, 2540, 2980, 3556, 4172, 4445, 5215, 6223, 7301, 8890, 10430, 12446, 14602, 17780, 18923, 20860, 24892, 29204, 31115, 36505, 37846, 62230, 73010, 75692, 94615, 124460, 132461, 146020, 189230, 264922, 378460, 529844, 662305, 927227, 1324610, 1854454, 2649220, 3708908, 4636135, 9272270, 18544540]

約数ペア:

[(1, 18544540), (2, 9272270), (4, 4636135), (5, 3708908), (7, 2649220), (10, 1854454), (14, 1324610), (20, 927227), (28, 662305), (35, 529844), (49, 378460), (70, 264922), (98, 189230), (127, 146020), (140, 132461), (149, 124460), (196, 94615), (245, 75692), (254, 73010), (298, 62230), (490, 37846), (508, 36505), (596, 31115), (635, 29204), (745, 24892), (889, 20860), (980, 18923), (1043, 17780), (1270, 14602), (1490, 12446), (1778, 10430), (2086, 8890), (2540, 7301), (2980, 6223), (3556, 5215), (4172, 4445)]