400089720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{821}}^1$

素因数の和:997

約数の個数: 128

約数和(自身を含む): 1249966080

約数和(自身を除く): 849876360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 131, 155, 186, 248, 262, 310, 372, 393, 465, 524, 620, 655, 744, 786, 821, 930, 1048, 1240, 1310, 1572, 1642, 1860, 1965, 2463, 2620, 3144, 3284, 3720, 3930, 4061, 4105, 4926, 5240, 6568, 7860, 8122, 8210, 9852, 12183, 12315, 15720, 16244, 16420, 19704, 20305, 24366, 24630, 25451, 32488, 32840, 40610, 48732, 49260, 50902, 60915, 76353, 81220, 97464, 98520, 101804, 107551, 121830, 127255, 152706, 162440, 203608, 215102, 243660, 254510, 305412, 322653, 381765, 430204, 487320, 509020, 537755, 610824, 645306, 763530, 860408, 1018040, 1075510, 1290612, 1527060, 1613265, 2151020, 2581224, 3054120, 3226530, 3334081, 4302040, 6453060, 6668162, 10002243, 12906120, 13336324, 16670405, 20004486, 26672648, 33340810, 40008972, 50011215, 66681620, 80017944, 100022430, 133363240, 200044860, 400089720]

約数ペア:

[(1, 400089720), (2, 200044860), (3, 133363240), (4, 100022430), (5, 80017944), (6, 66681620), (8, 50011215), (10, 40008972), (12, 33340810), (15, 26672648), (20, 20004486), (24, 16670405), (30, 13336324), (31, 12906120), (40, 10002243), (60, 6668162), (62, 6453060), (93, 4302040), (120, 3334081), (124, 3226530), (131, 3054120), (155, 2581224), (186, 2151020), (248, 1613265), (262, 1527060), (310, 1290612), (372, 1075510), (393, 1018040), (465, 860408), (524, 763530), (620, 645306), (655, 610824), (744, 537755), (786, 509020), (821, 487320), (930, 430204), (1048, 381765), (1240, 322653), (1310, 305412), (1572, 254510), (1642, 243660), (1860, 215102), (1965, 203608), (2463, 162440), (2620, 152706), (3144, 127255), (3284, 121830), (3720, 107551), (3930, 101804), (4061, 98520), (4105, 97464), (4926, 81220), (5240, 76353), (6568, 60915), (7860, 50902), (8122, 49260), (8210, 48732), (9852, 40610), (12183, 32840), (12315, 32488), (15720, 25451), (16244, 24630), (16420, 24366), (19704, 20305)]