21789804920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{577}}^1\times {\mathrm{72623}}^1$

素因数の和:73224

約数の個数: 64

約数和(自身を含む): 52890606720

約数和(自身を除く): 31100801800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 577, 1154, 2308, 2885, 4616, 5770, 7501, 11540, 15002, 23080, 30004, 37505, 60008, 72623, 75010, 145246, 150020, 290492, 300040, 363115, 580984, 726230, 944099, 1452460, 1888198, 2904920, 3776396, 4720495, 7552792, 9440990, 18881980, 37763960, 41903471, 83806942, 167613884, 209517355, 335227768, 419034710, 544745123, 838069420, 1089490246, 1676138840, 2178980492, 2723725615, 4357960984, 5447451230, 10894902460, 21789804920]

約数ペア:

[(1, 21789804920), (2, 10894902460), (4, 5447451230), (5, 4357960984), (8, 2723725615), (10, 2178980492), (13, 1676138840), (20, 1089490246), (26, 838069420), (40, 544745123), (52, 419034710), (65, 335227768), (104, 209517355), (130, 167613884), (260, 83806942), (520, 41903471), (577, 37763960), (1154, 18881980), (2308, 9440990), (2885, 7552792), (4616, 4720495), (5770, 3776396), (7501, 2904920), (11540, 1888198), (15002, 1452460), (23080, 944099), (30004, 726230), (37505, 580984), (60008, 363115), (72623, 300040), (75010, 290492), (145246, 150020)]