20480459940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1\times {\mathrm{9719}}^1$

素因数の和:10266

約数の個数: 144

約数和(自身を含む): 64959148800

約数和(自身を除く): 44478688860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 509, 690, 828, 1018, 1035, 1380, 1527, 2036, 2070, 2545, 3054, 4140, 4581, 5090, 6108, 7635, 9162, 9719, 10180, 11707, 15270, 18324, 19438, 22905, 23414, 29157, 30540, 35121, 38876, 45810, 46828, 48595, 58314, 58535, 70242, 87471, 91620, 97190, 105363, 116628, 117070, 140484, 145785, 174942, 175605, 194380, 210726, 223537, 234140, 291570, 349884, 351210, 421452, 437355, 447074, 526815, 583140, 670611, 702420, 874710, 894148, 1053630, 1117685, 1341222, 1749420, 2011833, 2107260, 2235370, 2682444, 3353055, 4023666, 4470740, 4946971, 6706110, 8047332, 9893942, 10059165, 13412220, 14840913, 19787884, 20118330, 24734855, 29681826, 40236660, 44522739, 49469710, 59363652, 74204565, 89045478, 98939420, 113780333, 148409130, 178090956, 222613695, 227560666, 296818260, 341340999, 445227390, 455121332, 568901665, 682681998, 890454780, 1024022997, 1137803330, 1365363996, 1706704995, 2048045994, 2275606660, 3413409990, 4096091988, 5120114985, 6826819980, 10240229970, 20480459940]

約数ペア:

[(1, 20480459940), (2, 10240229970), (3, 6826819980), (4, 5120114985), (5, 4096091988), (6, 3413409990), (9, 2275606660), (10, 2048045994), (12, 1706704995), (15, 1365363996), (18, 1137803330), (20, 1024022997), (23, 890454780), (30, 682681998), (36, 568901665), (45, 455121332), (46, 445227390), (60, 341340999), (69, 296818260), (90, 227560666), (92, 222613695), (115, 178090956), (138, 148409130), (180, 113780333), (207, 98939420), (230, 89045478), (276, 74204565), (345, 59363652), (414, 49469710), (460, 44522739), (509, 40236660), (690, 29681826), (828, 24734855), (1018, 20118330), (1035, 19787884), (1380, 14840913), (1527, 13412220), (2036, 10059165), (2070, 9893942), (2545, 8047332), (3054, 6706110), (4140, 4946971), (4581, 4470740), (5090, 4023666), (6108, 3353055), (7635, 2682444), (9162, 2235370), (9719, 2107260), (10180, 2011833), (11707, 1749420), (15270, 1341222), (18324, 1117685), (19438, 1053630), (22905, 894148), (23414, 874710), (29157, 702420), (30540, 670611), (35121, 583140), (38876, 526815), (45810, 447074), (46828, 437355), (48595, 421452), (58314, 351210), (58535, 349884), (70242, 291570), (87471, 234140), (91620, 223537), (97190, 210726), (105363, 194380), (116628, 175605), (117070, 174942), (140484, 145785)]