640000440

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{3727}}^1$

素因数の和:3803

約数の個数: 160

約数和(自身を含む): 2192287680

約数和(自身を除く): 1552287240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 53, 54, 60, 72, 81, 90, 106, 108, 120, 135, 159, 162, 180, 212, 216, 265, 270, 318, 324, 360, 405, 424, 477, 530, 540, 636, 648, 795, 810, 954, 1060, 1080, 1272, 1431, 1590, 1620, 1908, 2120, 2385, 2862, 3180, 3240, 3727, 3816, 4293, 4770, 5724, 6360, 7155, 7454, 8586, 9540, 11181, 11448, 14310, 14908, 17172, 18635, 19080, 21465, 22362, 28620, 29816, 33543, 34344, 37270, 42930, 44724, 55905, 57240, 67086, 74540, 85860, 89448, 100629, 111810, 134172, 149080, 167715, 171720, 197531, 201258, 223620, 268344, 301887, 335430, 395062, 402516, 447240, 503145, 592593, 603774, 670860, 790124, 805032, 987655, 1006290, 1185186, 1207548, 1341720, 1509435, 1580248, 1777779, 1975310, 2012580, 2370372, 2415096, 2962965, 3018870, 3555558, 3950620, 4025160, 4740744, 5333337, 5925930, 6037740, 7111116, 7901240, 8888895, 10666674, 11851860, 12075480, 14222232, 16000011, 17777790, 21333348, 23703720, 26666685, 32000022, 35555580, 42666696, 53333370, 64000044, 71111160, 80000055, 106666740, 128000088, 160000110, 213333480, 320000220, 640000440]

約数ペア:

[(1, 640000440), (2, 320000220), (3, 213333480), (4, 160000110), (5, 128000088), (6, 106666740), (8, 80000055), (9, 71111160), (10, 64000044), (12, 53333370), (15, 42666696), (18, 35555580), (20, 32000022), (24, 26666685), (27, 23703720), (30, 21333348), (36, 17777790), (40, 16000011), (45, 14222232), (53, 12075480), (54, 11851860), (60, 10666674), (72, 8888895), (81, 7901240), (90, 7111116), (106, 6037740), (108, 5925930), (120, 5333337), (135, 4740744), (159, 4025160), (162, 3950620), (180, 3555558), (212, 3018870), (216, 2962965), (265, 2415096), (270, 2370372), (318, 2012580), (324, 1975310), (360, 1777779), (405, 1580248), (424, 1509435), (477, 1341720), (530, 1207548), (540, 1185186), (636, 1006290), (648, 987655), (795, 805032), (810, 790124), (954, 670860), (1060, 603774), (1080, 592593), (1272, 503145), (1431, 447240), (1590, 402516), (1620, 395062), (1908, 335430), (2120, 301887), (2385, 268344), (2862, 223620), (3180, 201258), (3240, 197531), (3727, 171720), (3816, 167715), (4293, 149080), (4770, 134172), (5724, 111810), (6360, 100629), (7155, 89448), (7454, 85860), (8586, 74540), (9540, 67086), (11181, 57240), (11448, 55905), (14310, 44724), (14908, 42930), (17172, 37270), (18635, 34344), (19080, 33543), (21465, 29816), (22362, 28620)]