1977828520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{38903}}^1$

素因数の和:38986

約数の個数: 64

約数和(自身を含む): 4705827840

約数和(自身を除く): 2727999320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 410, 620, 820, 1240, 1271, 1640, 2542, 5084, 6355, 10168, 12710, 25420, 38903, 50840, 77806, 155612, 194515, 311224, 389030, 778060, 1205993, 1556120, 1595023, 2411986, 3190046, 4823972, 6029965, 6380092, 7975115, 9647944, 12059930, 12760184, 15950230, 24119860, 31900460, 48239720, 49445713, 63800920, 98891426, 197782852, 247228565, 395565704, 494457130, 988914260, 1977828520]

約数ペア:

[(1, 1977828520), (2, 988914260), (4, 494457130), (5, 395565704), (8, 247228565), (10, 197782852), (20, 98891426), (31, 63800920), (40, 49445713), (41, 48239720), (62, 31900460), (82, 24119860), (124, 15950230), (155, 12760184), (164, 12059930), (205, 9647944), (248, 7975115), (310, 6380092), (328, 6029965), (410, 4823972), (620, 3190046), (820, 2411986), (1240, 1595023), (1271, 1556120), (1640, 1205993), (2542, 778060), (5084, 389030), (6355, 311224), (10168, 194515), (12710, 155612), (25420, 77806), (38903, 50840)]