21595020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{997}}^1$

素因数の和:1047

約数の個数: 72

約数和(自身を含む): 63879984

約数和(自身を除く): 42284964

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 361, 380, 570, 722, 997, 1083, 1140, 1444, 1805, 1994, 2166, 2991, 3610, 3988, 4332, 4985, 5415, 5982, 7220, 9970, 10830, 11964, 14955, 18943, 19940, 21660, 29910, 37886, 56829, 59820, 75772, 94715, 113658, 189430, 227316, 284145, 359917, 378860, 568290, 719834, 1079751, 1136580, 1439668, 1799585, 2159502, 3599170, 4319004, 5398755, 7198340, 10797510, 21595020]

約数ペア:

[(1, 21595020), (2, 10797510), (3, 7198340), (4, 5398755), (5, 4319004), (6, 3599170), (10, 2159502), (12, 1799585), (15, 1439668), (19, 1136580), (20, 1079751), (30, 719834), (38, 568290), (57, 378860), (60, 359917), (76, 284145), (95, 227316), (114, 189430), (190, 113658), (228, 94715), (285, 75772), (361, 59820), (380, 56829), (570, 37886), (722, 29910), (997, 21660), (1083, 19940), (1140, 18943), (1444, 14955), (1805, 11964), (1994, 10830), (2166, 9970), (2991, 7220), (3610, 5982), (3988, 5415), (4332, 4985)]