About the Number

121313207820

121313207819 ← → 121313207821

2進数表記:1110000111110110101001010011000001100

漢数字表記:千二百十三億千三百二十万七千八百二十

素因数分解:

2 2 × 3 1 × 5 1 × 7 1 × 288840971 1

素因数の和:288840990
約数の個数: 48
約数和(自身を含む): 388202266368
約数和(自身を除く): 266889058548

約数列:
[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 288840971, 577681942, 866522913, 1155363884, 1444204855, 1733045826, 2021886797, 2888409710, 3466091652, 4043773594, 4332614565, 5776819420, 6065660391, 8087547188, 8665229130, 10109433985, 12131320782, 17330458260, 20218867970, 24262641564, 30328301955, 40437735940, 60656603910, 121313207820]

約数ペア:
[(1, 121313207820), (2, 60656603910), (3, 40437735940), (4, 30328301955), (5, 24262641564), (6, 20218867970), (7, 17330458260), (10, 12131320782), (12, 10109433985), (14, 8665229130), (15, 8087547188), (20, 6065660391), (21, 5776819420), (28, 4332614565), (30, 4043773594), (35, 3466091652), (42, 2888409710), (60, 2021886797), (70, 1733045826), (84, 1444204855), (105, 1155363884), (140, 866522913), (210, 577681942), (420, 288840971)]

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