31213280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2$

素因数の和:113

約数の個数: 144

約数和(自身を含む): 90084960

約数和(自身を除く): 58871680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 31, 32, 35, 40, 56, 58, 62, 70, 80, 112, 116, 124, 140, 145, 155, 160, 203, 217, 224, 232, 248, 280, 290, 310, 406, 434, 464, 496, 560, 580, 620, 812, 868, 899, 928, 961, 992, 1015, 1085, 1120, 1160, 1240, 1624, 1736, 1798, 1922, 2030, 2170, 2320, 2480, 3248, 3472, 3596, 3844, 4060, 4340, 4495, 4640, 4805, 4960, 6293, 6496, 6727, 6944, 7192, 7688, 8120, 8680, 8990, 9610, 12586, 13454, 14384, 15376, 16240, 17360, 17980, 19220, 25172, 26908, 27869, 28768, 30752, 31465, 32480, 33635, 34720, 35960, 38440, 50344, 53816, 55738, 62930, 67270, 71920, 76880, 100688, 107632, 111476, 125860, 134540, 139345, 143840, 153760, 195083, 201376, 215264, 222952, 251720, 269080, 278690, 390166, 445904, 503440, 538160, 557380, 780332, 891808, 975415, 1006880, 1076320, 1114760, 1560664, 1950830, 2229520, 3121328, 3901660, 4459040, 6242656, 7803320, 15606640, 31213280]

約数ペア:

[(1, 31213280), (2, 15606640), (4, 7803320), (5, 6242656), (7, 4459040), (8, 3901660), (10, 3121328), (14, 2229520), (16, 1950830), (20, 1560664), (28, 1114760), (29, 1076320), (31, 1006880), (32, 975415), (35, 891808), (40, 780332), (56, 557380), (58, 538160), (62, 503440), (70, 445904), (80, 390166), (112, 278690), (116, 269080), (124, 251720), (140, 222952), (145, 215264), (155, 201376), (160, 195083), (203, 153760), (217, 143840), (224, 139345), (232, 134540), (248, 125860), (280, 111476), (290, 107632), (310, 100688), (406, 76880), (434, 71920), (464, 67270), (496, 62930), (560, 55738), (580, 53816), (620, 50344), (812, 38440), (868, 35960), (899, 34720), (928, 33635), (961, 32480), (992, 31465), (1015, 30752), (1085, 28768), (1120, 27869), (1160, 26908), (1240, 25172), (1624, 19220), (1736, 17980), (1798, 17360), (1922, 16240), (2030, 15376), (2170, 14384), (2320, 13454), (2480, 12586), (3248, 9610), (3472, 8990), (3596, 8680), (3844, 8120), (4060, 7688), (4340, 7192), (4495, 6944), (4640, 6727), (4805, 6496), (4960, 6293)]