289609840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{991}}^1$

素因数の和:1298

約数の個数: 80

約数和(自身を含む): 728453376

約数和(自身を除く): 438843536

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 281, 520, 562, 991, 1040, 1124, 1405, 1982, 2248, 2810, 3653, 3964, 4496, 4955, 5620, 7306, 7928, 9910, 11240, 12883, 14612, 15856, 18265, 19820, 22480, 25766, 29224, 36530, 39640, 51532, 58448, 64415, 73060, 79280, 103064, 128830, 146120, 206128, 257660, 278471, 292240, 515320, 556942, 1030640, 1113884, 1392355, 2227768, 2784710, 3620123, 4455536, 5569420, 7240246, 11138840, 14480492, 18100615, 22277680, 28960984, 36201230, 57921968, 72402460, 144804920, 289609840]

約数ペア:

[(1, 289609840), (2, 144804920), (4, 72402460), (5, 57921968), (8, 36201230), (10, 28960984), (13, 22277680), (16, 18100615), (20, 14480492), (26, 11138840), (40, 7240246), (52, 5569420), (65, 4455536), (80, 3620123), (104, 2784710), (130, 2227768), (208, 1392355), (260, 1113884), (281, 1030640), (520, 556942), (562, 515320), (991, 292240), (1040, 278471), (1124, 257660), (1405, 206128), (1982, 146120), (2248, 128830), (2810, 103064), (3653, 79280), (3964, 73060), (4496, 64415), (4955, 58448), (5620, 51532), (7306, 39640), (7928, 36530), (9910, 29224), (11240, 25766), (12883, 22480), (14612, 19820), (15856, 18265)]