About the Number

131220720

131220719 ← → 131220721

2進数表記:111110100100100010011110000

漢数字表記:一億三千百二十二万七百二十

素因数分解:

2 4 × 3 2 × 5 1 × 59 1 × 3089 1

素因数の和:3167
約数の個数: 120
約数和(自身を含む): 448297200
約数和(自身を除く): 317076480

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 59, 60, 72, 80, 90, 118, 120, 144, 177, 180, 236, 240, 295, 354, 360, 472, 531, 590, 708, 720, 885, 944, 1062, 1180, 1416, 1770, 2124, 2360, 2655, 2832, 3089, 3540, 4248, 4720, 5310, 6178, 7080, 8496, 9267, 10620, 12356, 14160, 15445, 18534, 21240, 24712, 27801, 30890, 37068, 42480, 46335, 49424, 55602, 61780, 74136, 92670, 111204, 123560, 139005, 148272, 182251, 185340, 222408, 247120, 278010, 364502, 370680, 444816, 546753, 556020, 729004, 741360, 911255, 1093506, 1112040, 1458008, 1640259, 1822510, 2187012, 2224080, 2733765, 2916016, 3280518, 3645020, 4374024, 5467530, 6561036, 7290040, 8201295, 8748048, 10935060, 13122072, 14580080, 16402590, 21870120, 26244144, 32805180, 43740240, 65610360, 131220720]

約数ペア:
[(1, 131220720), (2, 65610360), (3, 43740240), (4, 32805180), (5, 26244144), (6, 21870120), (8, 16402590), (9, 14580080), (10, 13122072), (12, 10935060), (15, 8748048), (16, 8201295), (18, 7290040), (20, 6561036), (24, 5467530), (30, 4374024), (36, 3645020), (40, 3280518), (45, 2916016), (48, 2733765), (59, 2224080), (60, 2187012), (72, 1822510), (80, 1640259), (90, 1458008), (118, 1112040), (120, 1093506), (144, 911255), (177, 741360), (180, 729004), (236, 556020), (240, 546753), (295, 444816), (354, 370680), (360, 364502), (472, 278010), (531, 247120), (590, 222408), (708, 185340), (720, 182251), (885, 148272), (944, 139005), (1062, 123560), (1180, 111204), (1416, 92670), (1770, 74136), (2124, 61780), (2360, 55602), (2655, 49424), (2832, 46335), (3089, 42480), (3540, 37068), (4248, 30890), (4720, 27801), (5310, 24712), (6178, 21240), (7080, 18534), (8496, 15445), (9267, 14160), (10620, 12356)]

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