About the Number

1211800980

1211800979 ← → 1211800981

2進数表記:1001000001110101001110110010100

漢数字表記:十二億千百八十万九百八十

素因数分解:

2 2 × 3 1 × 5 1 × 13 2 × 127 1 × 941 1

素因数の和:1106
約数の個数: 144
約数和(自身を含む): 3706988544
約数和(自身を除く): 2495187564

約数列:
[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 127, 130, 156, 169, 195, 254, 260, 338, 381, 390, 507, 508, 635, 676, 762, 780, 845, 941, 1014, 1270, 1524, 1651, 1690, 1882, 1905, 2028, 2535, 2540, 2823, 3302, 3380, 3764, 3810, 4705, 4953, 5070, 5646, 6604, 7620, 8255, 9410, 9906, 10140, 11292, 12233, 14115, 16510, 18820, 19812, 21463, 24466, 24765, 28230, 33020, 36699, 42926, 48932, 49530, 56460, 61165, 64389, 73398, 85852, 99060, 107315, 119507, 122330, 128778, 146796, 159029, 183495, 214630, 239014, 244660, 257556, 318058, 321945, 358521, 366990, 429260, 477087, 478028, 597535, 636116, 643890, 717042, 733980, 795145, 954174, 1195070, 1287780, 1434084, 1553591, 1590290, 1792605, 1908348, 2385435, 2390140, 3107182, 3180580, 3585210, 4660773, 4770870, 6214364, 7170420, 7767955, 9321546, 9541740, 15535910, 18643092, 20196683, 23303865, 31071820, 40393366, 46607730, 60590049, 80786732, 93215460, 100983415, 121180098, 201966830, 242360196, 302950245, 403933660, 605900490, 1211800980]

約数ペア:
[(1, 1211800980), (2, 605900490), (3, 403933660), (4, 302950245), (5, 242360196), (6, 201966830), (10, 121180098), (12, 100983415), (13, 93215460), (15, 80786732), (20, 60590049), (26, 46607730), (30, 40393366), (39, 31071820), (52, 23303865), (60, 20196683), (65, 18643092), (78, 15535910), (127, 9541740), (130, 9321546), (156, 7767955), (169, 7170420), (195, 6214364), (254, 4770870), (260, 4660773), (338, 3585210), (381, 3180580), (390, 3107182), (507, 2390140), (508, 2385435), (635, 1908348), (676, 1792605), (762, 1590290), (780, 1553591), (845, 1434084), (941, 1287780), (1014, 1195070), (1270, 954174), (1524, 795145), (1651, 733980), (1690, 717042), (1882, 643890), (1905, 636116), (2028, 597535), (2535, 478028), (2540, 477087), (2823, 429260), (3302, 366990), (3380, 358521), (3764, 321945), (3810, 318058), (4705, 257556), (4953, 244660), (5070, 239014), (5646, 214630), (6604, 183495), (7620, 159029), (8255, 146796), (9410, 128778), (9906, 122330), (10140, 119507), (11292, 107315), (12233, 99060), (14115, 85852), (16510, 73398), (18820, 64389), (19812, 61165), (21463, 56460), (24466, 49530), (24765, 48932), (28230, 42926), (33020, 36699)]

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