About the Number

421388640

421388639 ← → 421388641

2進数表記:11001000111011110000101100000

漢数字表記:四億二千百三十八万八千六百四十

素因数分解:

2 5 × 3 2 × 5 1 × 292631 1

素因数の和:292652
約数の個数: 72
約数和(自身を含む): 1437993648
約数和(自身を除く): 1016605008

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 292631, 585262, 877893, 1170524, 1463155, 1755786, 2341048, 2633679, 2926310, 3511572, 4389465, 4682096, 5267358, 5852620, 7023144, 8778930, 9364192, 10534716, 11705240, 13168395, 14046288, 17557860, 21069432, 23410480, 26336790, 28092576, 35115720, 42138864, 46820960, 52673580, 70231440, 84277728, 105347160, 140462880, 210694320, 421388640]

約数ペア:
[(1, 421388640), (2, 210694320), (3, 140462880), (4, 105347160), (5, 84277728), (6, 70231440), (8, 52673580), (9, 46820960), (10, 42138864), (12, 35115720), (15, 28092576), (16, 26336790), (18, 23410480), (20, 21069432), (24, 17557860), (30, 14046288), (32, 13168395), (36, 11705240), (40, 10534716), (45, 9364192), (48, 8778930), (60, 7023144), (72, 5852620), (80, 5267358), (90, 4682096), (96, 4389465), (120, 3511572), (144, 2926310), (160, 2633679), (180, 2341048), (240, 1755786), (288, 1463155), (360, 1170524), (480, 877893), (720, 585262), (1440, 292631)]

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