21993750

素因数分解:

$2^1\times 3^2\times 5^5\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:73

約数の個数: 144

約数和(自身を含む): 65808288

約数和(自身を除く): 43814538

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 23, 25, 30, 34, 45, 46, 50, 51, 69, 75, 85, 90, 102, 115, 125, 138, 150, 153, 170, 207, 225, 230, 250, 255, 306, 345, 375, 391, 414, 425, 450, 510, 575, 625, 690, 750, 765, 782, 850, 1035, 1125, 1150, 1173, 1250, 1275, 1530, 1725, 1875, 1955, 2070, 2125, 2250, 2346, 2550, 2875, 3125, 3450, 3519, 3750, 3825, 3910, 4250, 5175, 5625, 5750, 5865, 6250, 6375, 7038, 7650, 8625, 9375, 9775, 10350, 10625, 11250, 11730, 12750, 14375, 17250, 17595, 18750, 19125, 19550, 21250, 25875, 28125, 28750, 29325, 31875, 35190, 38250, 43125, 48875, 51750, 53125, 56250, 58650, 63750, 71875, 86250, 87975, 95625, 97750, 106250, 129375, 143750, 146625, 159375, 175950, 191250, 215625, 244375, 258750, 293250, 318750, 431250, 439875, 478125, 488750, 646875, 733125, 879750, 956250, 1221875, 1293750, 1466250, 2199375, 2443750, 3665625, 4398750, 7331250, 10996875, 21993750]

約数ペア:

[(1, 21993750), (2, 10996875), (3, 7331250), (5, 4398750), (6, 3665625), (9, 2443750), (10, 2199375), (15, 1466250), (17, 1293750), (18, 1221875), (23, 956250), (25, 879750), (30, 733125), (34, 646875), (45, 488750), (46, 478125), (50, 439875), (51, 431250), (69, 318750), (75, 293250), (85, 258750), (90, 244375), (102, 215625), (115, 191250), (125, 175950), (138, 159375), (150, 146625), (153, 143750), (170, 129375), (207, 106250), (225, 97750), (230, 95625), (250, 87975), (255, 86250), (306, 71875), (345, 63750), (375, 58650), (391, 56250), (414, 53125), (425, 51750), (450, 48875), (510, 43125), (575, 38250), (625, 35190), (690, 31875), (750, 29325), (765, 28750), (782, 28125), (850, 25875), (1035, 21250), (1125, 19550), (1150, 19125), (1173, 18750), (1250, 17595), (1275, 17250), (1530, 14375), (1725, 12750), (1875, 11730), (1955, 11250), (2070, 10625), (2125, 10350), (2250, 9775), (2346, 9375), (2550, 8625), (2875, 7650), (3125, 7038), (3450, 6375), (3519, 6250), (3750, 5865), (3825, 5750), (3910, 5625), (4250, 5175)]