21158886

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{911}}^1$

素因数の和:1009

約数の個数: 48

約数和(自身を含む): 49904640

約数和(自身を除く): 28745754

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 79, 98, 147, 158, 237, 294, 474, 553, 911, 1106, 1659, 1822, 2733, 3318, 3871, 5466, 6377, 7742, 11613, 12754, 19131, 23226, 38262, 44639, 71969, 89278, 133917, 143938, 215907, 267834, 431814, 503783, 1007566, 1511349, 3022698, 3526481, 7052962, 10579443, 21158886]

約数ペア:

[(1, 21158886), (2, 10579443), (3, 7052962), (6, 3526481), (7, 3022698), (14, 1511349), (21, 1007566), (42, 503783), (49, 431814), (79, 267834), (98, 215907), (147, 143938), (158, 133917), (237, 89278), (294, 71969), (474, 44639), (553, 38262), (911, 23226), (1106, 19131), (1659, 12754), (1822, 11613), (2733, 7742), (3318, 6377), (3871, 5466)]