18940460

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{251}}^1$

素因数の和:292

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 31862740

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 251, 308, 343, 385, 490, 502, 539, 686, 770, 980, 1004, 1078, 1255, 1372, 1540, 1715, 1757, 2156, 2510, 2695, 2761, 3430, 3514, 3773, 5020, 5390, 5522, 6860, 7028, 7546, 8785, 10780, 11044, 12299, 13805, 15092, 17570, 18865, 19327, 24598, 27610, 35140, 37730, 38654, 49196, 55220, 61495, 75460, 77308, 86093, 96635, 122990, 135289, 172186, 193270, 245980, 270578, 344372, 386540, 430465, 541156, 676445, 860930, 947023, 1352890, 1721860, 1894046, 2705780, 3788092, 4735115, 9470230, 18940460]

約数ペア:

[(1, 18940460), (2, 9470230), (4, 4735115), (5, 3788092), (7, 2705780), (10, 1894046), (11, 1721860), (14, 1352890), (20, 947023), (22, 860930), (28, 676445), (35, 541156), (44, 430465), (49, 386540), (55, 344372), (70, 270578), (77, 245980), (98, 193270), (110, 172186), (140, 135289), (154, 122990), (196, 96635), (220, 86093), (245, 77308), (251, 75460), (308, 61495), (343, 55220), (385, 49196), (490, 38654), (502, 37730), (539, 35140), (686, 27610), (770, 24598), (980, 19327), (1004, 18865), (1078, 17570), (1255, 15092), (1372, 13805), (1540, 12299), (1715, 11044), (1757, 10780), (2156, 8785), (2510, 7546), (2695, 7028), (2761, 6860), (3430, 5522), (3514, 5390), (3773, 5020)]