About the Number

72742020

72742019 ← → 72742021

2進数表記:100010101011111010010000100

漢数字表記:七千二百七十四万二千二十

素因数分解:

2 2 × 3 1 × 5 1 × 13 1 × 179 1 × 521 1

素因数の和:725
約数の個数: 96
約数和(自身を含む): 220993920
約数和(自身を除く): 148251900

約数列:
[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 179, 195, 260, 358, 390, 521, 537, 716, 780, 895, 1042, 1074, 1563, 1790, 2084, 2148, 2327, 2605, 2685, 3126, 3580, 4654, 5210, 5370, 6252, 6773, 6981, 7815, 9308, 10420, 10740, 11635, 13546, 13962, 15630, 20319, 23270, 27092, 27924, 31260, 33865, 34905, 40638, 46540, 67730, 69810, 81276, 93259, 101595, 135460, 139620, 186518, 203190, 279777, 373036, 406380, 466295, 559554, 932590, 1119108, 1212367, 1398885, 1865180, 2424734, 2797770, 3637101, 4849468, 5595540, 6061835, 7274202, 12123670, 14548404, 18185505, 24247340, 36371010, 72742020]

約数ペア:
[(1, 72742020), (2, 36371010), (3, 24247340), (4, 18185505), (5, 14548404), (6, 12123670), (10, 7274202), (12, 6061835), (13, 5595540), (15, 4849468), (20, 3637101), (26, 2797770), (30, 2424734), (39, 1865180), (52, 1398885), (60, 1212367), (65, 1119108), (78, 932590), (130, 559554), (156, 466295), (179, 406380), (195, 373036), (260, 279777), (358, 203190), (390, 186518), (521, 139620), (537, 135460), (716, 101595), (780, 93259), (895, 81276), (1042, 69810), (1074, 67730), (1563, 46540), (1790, 40638), (2084, 34905), (2148, 33865), (2327, 31260), (2605, 27924), (2685, 27092), (3126, 23270), (3580, 20319), (4654, 15630), (5210, 13962), (5370, 13546), (6252, 11635), (6773, 10740), (6981, 10420), (7815, 9308)]

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