21417375

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 41932800

約数和(自身を除く): 20515425

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 41, 75, 105, 123, 125, 175, 199, 205, 287, 375, 525, 597, 615, 861, 875, 995, 1025, 1393, 1435, 2625, 2985, 3075, 4179, 4305, 4975, 5125, 6965, 7175, 8159, 14925, 15375, 20895, 21525, 24477, 24875, 34825, 35875, 40795, 57113, 74625, 104475, 107625, 122385, 171339, 174125, 203975, 285565, 522375, 611925, 856695, 1019875, 1427825, 3059625, 4283475, 7139125, 21417375]

約数ペア:

[(1, 21417375), (3, 7139125), (5, 4283475), (7, 3059625), (15, 1427825), (21, 1019875), (25, 856695), (35, 611925), (41, 522375), (75, 285565), (105, 203975), (123, 174125), (125, 171339), (175, 122385), (199, 107625), (205, 104475), (287, 74625), (375, 57113), (525, 40795), (597, 35875), (615, 34825), (861, 24875), (875, 24477), (995, 21525), (1025, 20895), (1393, 15375), (1435, 14925), (2625, 8159), (2985, 7175), (3075, 6965), (4179, 5125), (4305, 4975)]