21998520080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{277}}^1\times {\mathrm{1033}}^1$

素因数の和:1385

約数の個数: 120

約数和(自身を含む): 53091809496

約数和(自身を除く): 31093289416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 277, 310, 496, 554, 620, 961, 1033, 1108, 1240, 1385, 1922, 2066, 2216, 2480, 2770, 3844, 4132, 4432, 4805, 5165, 5540, 7688, 8264, 8587, 9610, 10330, 11080, 15376, 16528, 17174, 19220, 20660, 22160, 32023, 34348, 38440, 41320, 42935, 64046, 68696, 76880, 82640, 85870, 128092, 137392, 160115, 171740, 256184, 266197, 286141, 320230, 343480, 512368, 532394, 572282, 640460, 686960, 992713, 1064788, 1144564, 1280920, 1330985, 1430705, 1985426, 2129576, 2289128, 2561840, 2661970, 2861410, 3970852, 4259152, 4578256, 4963565, 5323940, 5722820, 7941704, 8870371, 9927130, 10647880, 11445640, 15883408, 17740742, 19854260, 21295760, 22891280, 35481484, 39708520, 44351855, 70962968, 79417040, 88703710, 141925936, 177407420, 274981501, 354814840, 549963002, 709629680, 1099926004, 1374907505, 2199852008, 2749815010, 4399704016, 5499630020, 10999260040, 21998520080]

約数ペア:

[(1, 21998520080), (2, 10999260040), (4, 5499630020), (5, 4399704016), (8, 2749815010), (10, 2199852008), (16, 1374907505), (20, 1099926004), (31, 709629680), (40, 549963002), (62, 354814840), (80, 274981501), (124, 177407420), (155, 141925936), (248, 88703710), (277, 79417040), (310, 70962968), (496, 44351855), (554, 39708520), (620, 35481484), (961, 22891280), (1033, 21295760), (1108, 19854260), (1240, 17740742), (1385, 15883408), (1922, 11445640), (2066, 10647880), (2216, 9927130), (2480, 8870371), (2770, 7941704), (3844, 5722820), (4132, 5323940), (4432, 4963565), (4805, 4578256), (5165, 4259152), (5540, 3970852), (7688, 2861410), (8264, 2661970), (8587, 2561840), (9610, 2289128), (10330, 2129576), (11080, 1985426), (15376, 1430705), (16528, 1330985), (17174, 1280920), (19220, 1144564), (20660, 1064788), (22160, 992713), (32023, 686960), (34348, 640460), (38440, 572282), (41320, 532394), (42935, 512368), (64046, 343480), (68696, 320230), (76880, 286141), (82640, 266197), (85870, 256184), (128092, 171740), (137392, 160115)]