21060375

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 40974336

約数和(自身を除く): 19913961

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 71, 75, 105, 113, 125, 175, 213, 339, 355, 375, 497, 525, 565, 791, 875, 1065, 1491, 1695, 1775, 2373, 2485, 2625, 2825, 3955, 5325, 7455, 8023, 8475, 8875, 11865, 12425, 14125, 19775, 24069, 26625, 37275, 40115, 42375, 56161, 59325, 62125, 98875, 120345, 168483, 186375, 200575, 280805, 296625, 601725, 842415, 1002875, 1404025, 3008625, 4212075, 7020125, 21060375]

約数ペア:

[(1, 21060375), (3, 7020125), (5, 4212075), (7, 3008625), (15, 1404025), (21, 1002875), (25, 842415), (35, 601725), (71, 296625), (75, 280805), (105, 200575), (113, 186375), (125, 168483), (175, 120345), (213, 98875), (339, 62125), (355, 59325), (375, 56161), (497, 42375), (525, 40115), (565, 37275), (791, 26625), (875, 24069), (1065, 19775), (1491, 14125), (1695, 12425), (1775, 11865), (2373, 8875), (2485, 8475), (2625, 8023), (2825, 7455), (3955, 5325)]