28196980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:209

約数の個数: 96

約数和(自身を含む): 71608320

約数和(自身を除く): 43411340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 73, 89, 124, 140, 146, 155, 178, 217, 292, 310, 356, 365, 434, 445, 511, 620, 623, 730, 868, 890, 1022, 1085, 1246, 1460, 1780, 2044, 2170, 2263, 2492, 2555, 2759, 3115, 4340, 4526, 5110, 5518, 6230, 6497, 9052, 10220, 11036, 11315, 12460, 12994, 13795, 15841, 19313, 22630, 25988, 27590, 31682, 32485, 38626, 45260, 45479, 55180, 63364, 64970, 77252, 79205, 90958, 96565, 129940, 158410, 181916, 193130, 201407, 227395, 316820, 386260, 402814, 454790, 805628, 909580, 1007035, 1409849, 2014070, 2819698, 4028140, 5639396, 7049245, 14098490, 28196980]

約数ペア:

[(1, 28196980), (2, 14098490), (4, 7049245), (5, 5639396), (7, 4028140), (10, 2819698), (14, 2014070), (20, 1409849), (28, 1007035), (31, 909580), (35, 805628), (62, 454790), (70, 402814), (73, 386260), (89, 316820), (124, 227395), (140, 201407), (146, 193130), (155, 181916), (178, 158410), (217, 129940), (292, 96565), (310, 90958), (356, 79205), (365, 77252), (434, 64970), (445, 63364), (511, 55180), (620, 45479), (623, 45260), (730, 38626), (868, 32485), (890, 31682), (1022, 27590), (1085, 25988), (1246, 22630), (1460, 19313), (1780, 15841), (2044, 13795), (2170, 12994), (2263, 12460), (2492, 11315), (2555, 11036), (2759, 10220), (3115, 9052), (4340, 6497), (4526, 6230), (5110, 5518)]