20638436

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{59}}^1$

素因数の和:145

約数の個数: 72

約数和(自身を含む): 46710720

約数和(自身を除く): 26072284

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 52, 59, 62, 91, 118, 124, 182, 217, 236, 364, 403, 413, 434, 767, 806, 826, 868, 961, 1534, 1612, 1652, 1829, 1922, 2821, 3068, 3658, 3844, 5369, 5642, 6727, 7316, 10738, 11284, 12493, 12803, 13454, 21476, 23777, 24986, 25606, 26908, 47554, 49972, 51212, 56699, 87451, 95108, 113398, 166439, 174902, 226796, 332878, 349804, 396893, 665756, 737087, 793786, 1474174, 1587572, 2948348, 5159609, 10319218, 20638436]

約数ペア:

[(1, 20638436), (2, 10319218), (4, 5159609), (7, 2948348), (13, 1587572), (14, 1474174), (26, 793786), (28, 737087), (31, 665756), (52, 396893), (59, 349804), (62, 332878), (91, 226796), (118, 174902), (124, 166439), (182, 113398), (217, 95108), (236, 87451), (364, 56699), (403, 51212), (413, 49972), (434, 47554), (767, 26908), (806, 25606), (826, 24986), (868, 23777), (961, 21476), (1534, 13454), (1612, 12803), (1652, 12493), (1829, 11284), (1922, 10738), (2821, 7316), (3068, 6727), (3658, 5642), (3844, 5369)]