About the Number

131218320

131218319 ← → 131218321

2進数表記:111110100100011101110010000

漢数字表記:一億三千百二十一万八千三百二十

素因数分解:

2 4 × 3 1 × 5 1 × 61 1 × 8963 1

素因数の和:9040
約数の個数: 80
約数和(自身を含む): 413491392
約数和(自身を除く): 282273072

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 61, 80, 120, 122, 183, 240, 244, 305, 366, 488, 610, 732, 915, 976, 1220, 1464, 1830, 2440, 2928, 3660, 4880, 7320, 8963, 14640, 17926, 26889, 35852, 44815, 53778, 71704, 89630, 107556, 134445, 143408, 179260, 215112, 268890, 358520, 430224, 537780, 546743, 717040, 1075560, 1093486, 1640229, 2151120, 2186972, 2733715, 3280458, 4373944, 5467430, 6560916, 8201145, 8747888, 10934860, 13121832, 16402290, 21869720, 26243664, 32804580, 43739440, 65609160, 131218320]

約数ペア:
[(1, 131218320), (2, 65609160), (3, 43739440), (4, 32804580), (5, 26243664), (6, 21869720), (8, 16402290), (10, 13121832), (12, 10934860), (15, 8747888), (16, 8201145), (20, 6560916), (24, 5467430), (30, 4373944), (40, 3280458), (48, 2733715), (60, 2186972), (61, 2151120), (80, 1640229), (120, 1093486), (122, 1075560), (183, 717040), (240, 546743), (244, 537780), (305, 430224), (366, 358520), (488, 268890), (610, 215112), (732, 179260), (915, 143408), (976, 134445), (1220, 107556), (1464, 89630), (1830, 71704), (2440, 53778), (2928, 44815), (3660, 35852), (4880, 26889), (7320, 17926), (8963, 14640)]

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