261466400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{811}}^1$

素因数の和:875

約数の個数: 144

約数和(自身を含む): 710454528

約数和(自身を除く): 448988128

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 65, 80, 100, 104, 124, 130, 155, 160, 200, 208, 248, 260, 310, 325, 400, 403, 416, 496, 520, 620, 650, 775, 800, 806, 811, 992, 1040, 1240, 1300, 1550, 1612, 1622, 2015, 2080, 2480, 2600, 3100, 3224, 3244, 4030, 4055, 4960, 5200, 6200, 6448, 6488, 8060, 8110, 10075, 10400, 10543, 12400, 12896, 12976, 16120, 16220, 20150, 20275, 21086, 24800, 25141, 25952, 32240, 32440, 40300, 40550, 42172, 50282, 52715, 64480, 64880, 80600, 81100, 84344, 100564, 105430, 125705, 129760, 161200, 162200, 168688, 201128, 210860, 251410, 263575, 322400, 324400, 326833, 337376, 402256, 421720, 502820, 527150, 628525, 648800, 653666, 804512, 843440, 1005640, 1054300, 1257050, 1307332, 1634165, 1686880, 2011280, 2108600, 2514100, 2614664, 3268330, 4022560, 4217200, 5028200, 5229328, 6536660, 8170825, 8434400, 10056400, 10458656, 13073320, 16341650, 20112800, 26146640, 32683300, 52293280, 65366600, 130733200, 261466400]

約数ペア:

[(1, 261466400), (2, 130733200), (4, 65366600), (5, 52293280), (8, 32683300), (10, 26146640), (13, 20112800), (16, 16341650), (20, 13073320), (25, 10458656), (26, 10056400), (31, 8434400), (32, 8170825), (40, 6536660), (50, 5229328), (52, 5028200), (62, 4217200), (65, 4022560), (80, 3268330), (100, 2614664), (104, 2514100), (124, 2108600), (130, 2011280), (155, 1686880), (160, 1634165), (200, 1307332), (208, 1257050), (248, 1054300), (260, 1005640), (310, 843440), (325, 804512), (400, 653666), (403, 648800), (416, 628525), (496, 527150), (520, 502820), (620, 421720), (650, 402256), (775, 337376), (800, 326833), (806, 324400), (811, 322400), (992, 263575), (1040, 251410), (1240, 210860), (1300, 201128), (1550, 168688), (1612, 162200), (1622, 161200), (2015, 129760), (2080, 125705), (2480, 105430), (2600, 100564), (3100, 84344), (3224, 81100), (3244, 80600), (4030, 64880), (4055, 64480), (4960, 52715), (5200, 50282), (6200, 42172), (6448, 40550), (6488, 40300), (8060, 32440), (8110, 32240), (10075, 25952), (10400, 25141), (10543, 24800), (12400, 21086), (12896, 20275), (12976, 20150), (16120, 16220)]