28780245

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1$

素因数の和:104

約数の個数: 96

約数和(自身を含む): 59458560

約数和(自身を除く): 30678315

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 31, 39, 45, 65, 69, 93, 115, 117, 135, 155, 195, 207, 279, 299, 345, 351, 403, 465, 529, 585, 621, 713, 837, 897, 1035, 1209, 1395, 1495, 1587, 1755, 2015, 2139, 2645, 2691, 3105, 3565, 3627, 4185, 4485, 4761, 6045, 6417, 6877, 7935, 8073, 9269, 10695, 10881, 13455, 14283, 16399, 18135, 19251, 20631, 23805, 27807, 32085, 34385, 40365, 46345, 49197, 54405, 61893, 71415, 81995, 83421, 96255, 103155, 139035, 147591, 185679, 213187, 245985, 250263, 309465, 417105, 442773, 639561, 737955, 928395, 1065935, 1251315, 1918683, 2213865, 3197805, 5756049, 9593415, 28780245]

約数ペア:

[(1, 28780245), (3, 9593415), (5, 5756049), (9, 3197805), (13, 2213865), (15, 1918683), (23, 1251315), (27, 1065935), (31, 928395), (39, 737955), (45, 639561), (65, 442773), (69, 417105), (93, 309465), (115, 250263), (117, 245985), (135, 213187), (155, 185679), (195, 147591), (207, 139035), (279, 103155), (299, 96255), (345, 83421), (351, 81995), (403, 71415), (465, 61893), (529, 54405), (585, 49197), (621, 46345), (713, 40365), (837, 34385), (897, 32085), (1035, 27807), (1209, 23805), (1395, 20631), (1495, 19251), (1587, 18135), (1755, 16399), (2015, 14283), (2139, 13455), (2645, 10881), (2691, 10695), (3105, 9269), (3565, 8073), (3627, 7935), (4185, 6877), (4485, 6417), (4761, 6045)]