21671970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:419

約数の個数: 64

約数和(自身を含む): 55313280

約数和(自身を除く): 33641310

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 95, 114, 190, 193, 197, 285, 386, 394, 570, 579, 591, 965, 985, 1158, 1182, 1930, 1970, 2895, 2955, 3667, 3743, 5790, 5910, 7334, 7486, 11001, 11229, 18335, 18715, 22002, 22458, 36670, 37430, 38021, 55005, 56145, 76042, 110010, 112290, 114063, 190105, 228126, 380210, 570315, 722399, 1140630, 1444798, 2167197, 3611995, 4334394, 7223990, 10835985, 21671970]

約数ペア:

[(1, 21671970), (2, 10835985), (3, 7223990), (5, 4334394), (6, 3611995), (10, 2167197), (15, 1444798), (19, 1140630), (30, 722399), (38, 570315), (57, 380210), (95, 228126), (114, 190105), (190, 114063), (193, 112290), (197, 110010), (285, 76042), (386, 56145), (394, 55005), (570, 38021), (579, 37430), (591, 36670), (965, 22458), (985, 22002), (1158, 18715), (1182, 18335), (1930, 11229), (1970, 11001), (2895, 7486), (2955, 7334), (3667, 5910), (3743, 5790)]