20528190

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:294

約数の個数: 96

約数和(自身を含む): 57148416

約数和(自身を除く): 36620226

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 45, 46, 47, 69, 90, 94, 115, 138, 141, 207, 211, 230, 235, 282, 345, 414, 422, 423, 470, 633, 690, 705, 846, 1035, 1055, 1081, 1266, 1410, 1899, 2070, 2110, 2115, 2162, 3165, 3243, 3798, 4230, 4853, 5405, 6330, 6486, 9495, 9706, 9729, 9917, 10810, 14559, 16215, 18990, 19458, 19834, 24265, 29118, 29751, 32430, 43677, 48530, 48645, 49585, 59502, 72795, 87354, 89253, 97290, 99170, 145590, 148755, 178506, 218385, 228091, 297510, 436770, 446265, 456182, 684273, 892530, 1140455, 1368546, 2052819, 2280910, 3421365, 4105638, 6842730, 10264095, 20528190]

約数ペア:

[(1, 20528190), (2, 10264095), (3, 6842730), (5, 4105638), (6, 3421365), (9, 2280910), (10, 2052819), (15, 1368546), (18, 1140455), (23, 892530), (30, 684273), (45, 456182), (46, 446265), (47, 436770), (69, 297510), (90, 228091), (94, 218385), (115, 178506), (138, 148755), (141, 145590), (207, 99170), (211, 97290), (230, 89253), (235, 87354), (282, 72795), (345, 59502), (414, 49585), (422, 48645), (423, 48530), (470, 43677), (633, 32430), (690, 29751), (705, 29118), (846, 24265), (1035, 19834), (1055, 19458), (1081, 18990), (1266, 16215), (1410, 14559), (1899, 10810), (2070, 9917), (2110, 9729), (2115, 9706), (2162, 9495), (3165, 6486), (3243, 6330), (3798, 5405), (4230, 4853)]