21011650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{151}}^1$

素因数の和:208

約数の個数: 72

約数和(自身を含む): 45122112

約数和(自身を除く): 24110462

約数列:

[1, 2, 5, 10, 11, 22, 23, 25, 46, 50, 55, 110, 115, 121, 151, 230, 242, 253, 275, 302, 506, 550, 575, 605, 755, 1150, 1210, 1265, 1510, 1661, 2530, 2783, 3025, 3322, 3473, 3775, 5566, 6050, 6325, 6946, 7550, 8305, 12650, 13915, 16610, 17365, 18271, 27830, 34730, 36542, 38203, 41525, 69575, 76406, 83050, 86825, 91355, 139150, 173650, 182710, 191015, 382030, 420233, 456775, 840466, 913550, 955075, 1910150, 2101165, 4202330, 10505825, 21011650]

約数ペア:

[(1, 21011650), (2, 10505825), (5, 4202330), (10, 2101165), (11, 1910150), (22, 955075), (23, 913550), (25, 840466), (46, 456775), (50, 420233), (55, 382030), (110, 191015), (115, 182710), (121, 173650), (151, 139150), (230, 91355), (242, 86825), (253, 83050), (275, 76406), (302, 69575), (506, 41525), (550, 38203), (575, 36542), (605, 34730), (755, 27830), (1150, 18271), (1210, 17365), (1265, 16610), (1510, 13915), (1661, 12650), (2530, 8305), (2783, 7550), (3025, 6946), (3322, 6325), (3473, 6050), (3775, 5566)]