420837480

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{23857}}^1$

素因数の和:23888

約数の個数: 144

約数和(自身を含む): 1591090020

約数和(自身を除く): 1170252540

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1176, 1260, 1470, 1764, 1960, 2205, 2520, 2940, 3528, 4410, 5880, 8820, 17640, 23857, 47714, 71571, 95428, 119285, 143142, 166999, 190856, 214713, 238570, 286284, 333998, 357855, 429426, 477140, 500997, 572568, 667996, 715710, 834995, 858852, 954280, 1001994, 1073565, 1168993, 1335992, 1431420, 1502991, 1669990, 1717704, 2003988, 2147130, 2337986, 2504985, 2862840, 3005982, 3339980, 3506979, 4007976, 4294260, 4675972, 5009970, 5844965, 6011964, 6679960, 7013958, 7514955, 8588520, 9351944, 10019940, 10520937, 11689930, 12023928, 14027916, 15029910, 17534895, 20039880, 21041874, 23379860, 28055832, 30059820, 35069790, 42083748, 46759720, 52604685, 60119640, 70139580, 84167496, 105209370, 140279160, 210418740, 420837480]

約数ペア:

[(1, 420837480), (2, 210418740), (3, 140279160), (4, 105209370), (5, 84167496), (6, 70139580), (7, 60119640), (8, 52604685), (9, 46759720), (10, 42083748), (12, 35069790), (14, 30059820), (15, 28055832), (18, 23379860), (20, 21041874), (21, 20039880), (24, 17534895), (28, 15029910), (30, 14027916), (35, 12023928), (36, 11689930), (40, 10520937), (42, 10019940), (45, 9351944), (49, 8588520), (56, 7514955), (60, 7013958), (63, 6679960), (70, 6011964), (72, 5844965), (84, 5009970), (90, 4675972), (98, 4294260), (105, 4007976), (120, 3506979), (126, 3339980), (140, 3005982), (147, 2862840), (168, 2504985), (180, 2337986), (196, 2147130), (210, 2003988), (245, 1717704), (252, 1669990), (280, 1502991), (294, 1431420), (315, 1335992), (360, 1168993), (392, 1073565), (420, 1001994), (441, 954280), (490, 858852), (504, 834995), (588, 715710), (630, 667996), (735, 572568), (840, 500997), (882, 477140), (980, 429426), (1176, 357855), (1260, 333998), (1470, 286284), (1764, 238570), (1960, 214713), (2205, 190856), (2520, 166999), (2940, 143142), (3528, 119285), (4410, 95428), (5880, 71571), (8820, 47714), (17640, 23857)]