About the Number

120785980

120785979 ← → 120785981

2進数表記:111001100110000110000111100

漢数字表記:一億二千七十八万五千九百八十

素因数分解:

2 2 × 5 1 × 7 2 × 59 1 × 2089 1

素因数の和:2171
約数の個数: 72
約数和(自身を含む): 300207600
約数和(自身を除く): 179421620

約数列:
[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 59, 70, 98, 118, 140, 196, 236, 245, 295, 413, 490, 590, 826, 980, 1180, 1652, 2065, 2089, 2891, 4130, 4178, 5782, 8260, 8356, 10445, 11564, 14455, 14623, 20890, 28910, 29246, 41780, 57820, 58492, 73115, 102361, 123251, 146230, 204722, 246502, 292460, 409444, 493004, 511805, 616255, 862757, 1023610, 1232510, 1725514, 2047220, 2465020, 3451028, 4313785, 6039299, 8627570, 12078598, 17255140, 24157196, 30196495, 60392990, 120785980]

約数ペア:
[(1, 120785980), (2, 60392990), (4, 30196495), (5, 24157196), (7, 17255140), (10, 12078598), (14, 8627570), (20, 6039299), (28, 4313785), (35, 3451028), (49, 2465020), (59, 2047220), (70, 1725514), (98, 1232510), (118, 1023610), (140, 862757), (196, 616255), (236, 511805), (245, 493004), (295, 409444), (413, 292460), (490, 246502), (590, 204722), (826, 146230), (980, 123251), (1180, 102361), (1652, 73115), (2065, 58492), (2089, 57820), (2891, 41780), (4130, 29246), (4178, 28910), (5782, 20890), (8260, 14623), (8356, 14455), (10445, 11564)]

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