18883515

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 18441285

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 71, 85, 105, 119, 149, 213, 255, 355, 357, 447, 497, 595, 745, 1043, 1065, 1207, 1491, 1785, 2235, 2485, 2533, 3129, 3621, 5215, 6035, 7455, 7599, 8449, 10579, 12665, 15645, 17731, 18105, 25347, 31737, 37995, 42245, 52895, 53193, 74053, 88655, 126735, 158685, 179843, 222159, 265965, 370265, 539529, 899215, 1110795, 1258901, 2697645, 3776703, 6294505, 18883515]

約数ペア:

[(1, 18883515), (3, 6294505), (5, 3776703), (7, 2697645), (15, 1258901), (17, 1110795), (21, 899215), (35, 539529), (51, 370265), (71, 265965), (85, 222159), (105, 179843), (119, 158685), (149, 126735), (213, 88655), (255, 74053), (355, 53193), (357, 52895), (447, 42245), (497, 37995), (595, 31737), (745, 25347), (1043, 18105), (1065, 17731), (1207, 15645), (1491, 12665), (1785, 10579), (2235, 8449), (2485, 7599), (2533, 7455), (3129, 6035), (3621, 5215)]