About the Number

130721220

130721219 ← → 130721221

2進数表記:111110010101010010111000100

漢数字表記:一億三千七十二万千二百二十

素因数分解:

2 2 × 3 2 × 5 1 × 7 2 × 14821 1

素因数の和:14850
約数の個数: 108
約数和(自身を含む): 461290284
約数和(自身を除く): 330569064

約数列:
[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 4410, 8820, 14821, 29642, 44463, 59284, 74105, 88926, 103747, 133389, 148210, 177852, 207494, 222315, 266778, 296420, 311241, 414988, 444630, 518735, 533556, 622482, 666945, 726229, 889260, 933723, 1037470, 1244964, 1333890, 1452458, 1556205, 1867446, 2074940, 2178687, 2667780, 2904916, 3112410, 3631145, 3734892, 4357374, 4668615, 6224820, 6536061, 7262290, 8714748, 9337230, 10893435, 13072122, 14524580, 18674460, 21786870, 26144244, 32680305, 43573740, 65360610, 130721220]

約数ペア:
[(1, 130721220), (2, 65360610), (3, 43573740), (4, 32680305), (5, 26144244), (6, 21786870), (7, 18674460), (9, 14524580), (10, 13072122), (12, 10893435), (14, 9337230), (15, 8714748), (18, 7262290), (20, 6536061), (21, 6224820), (28, 4668615), (30, 4357374), (35, 3734892), (36, 3631145), (42, 3112410), (45, 2904916), (49, 2667780), (60, 2178687), (63, 2074940), (70, 1867446), (84, 1556205), (90, 1452458), (98, 1333890), (105, 1244964), (126, 1037470), (140, 933723), (147, 889260), (180, 726229), (196, 666945), (210, 622482), (245, 533556), (252, 518735), (294, 444630), (315, 414988), (420, 311241), (441, 296420), (490, 266778), (588, 222315), (630, 207494), (735, 177852), (882, 148210), (980, 133389), (1260, 103747), (1470, 88926), (1764, 74105), (2205, 59284), (2940, 44463), (4410, 29642), (8820, 14821)]

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