398312960

素因数分解:

$2^9\times 5^1\times {\mathrm{19}}^2\times {\mathrm{431}}^1$

素因数の和:492

約数の個数: 120

約数和(自身を含む): 1010265696

約数和(自身を除く): 611952736

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 361, 380, 431, 512, 608, 640, 722, 760, 862, 1216, 1280, 1444, 1520, 1724, 1805, 2155, 2432, 2560, 2888, 3040, 3448, 3610, 4310, 4864, 5776, 6080, 6896, 7220, 8189, 8620, 9728, 11552, 12160, 13792, 14440, 16378, 17240, 23104, 24320, 27584, 28880, 32756, 34480, 40945, 46208, 48640, 55168, 57760, 65512, 68960, 81890, 92416, 110336, 115520, 131024, 137920, 155591, 163780, 184832, 220672, 231040, 262048, 275840, 311182, 327560, 462080, 524096, 551680, 622364, 655120, 777955, 924160, 1048192, 1103360, 1244728, 1310240, 1555910, 2096384, 2489456, 2620480, 3111820, 4192768, 4978912, 5240960, 6223640, 9957824, 10481920, 12447280, 19915648, 20963840, 24894560, 39831296, 49789120, 79662592, 99578240, 199156480, 398312960]

約数ペア:

[(1, 398312960), (2, 199156480), (4, 99578240), (5, 79662592), (8, 49789120), (10, 39831296), (16, 24894560), (19, 20963840), (20, 19915648), (32, 12447280), (38, 10481920), (40, 9957824), (64, 6223640), (76, 5240960), (80, 4978912), (95, 4192768), (128, 3111820), (152, 2620480), (160, 2489456), (190, 2096384), (256, 1555910), (304, 1310240), (320, 1244728), (361, 1103360), (380, 1048192), (431, 924160), (512, 777955), (608, 655120), (640, 622364), (722, 551680), (760, 524096), (862, 462080), (1216, 327560), (1280, 311182), (1444, 275840), (1520, 262048), (1724, 231040), (1805, 220672), (2155, 184832), (2432, 163780), (2560, 155591), (2888, 137920), (3040, 131024), (3448, 115520), (3610, 110336), (4310, 92416), (4864, 81890), (5776, 68960), (6080, 65512), (6896, 57760), (7220, 55168), (8189, 48640), (8620, 46208), (9728, 40945), (11552, 34480), (12160, 32756), (13792, 28880), (14440, 27584), (16378, 24320), (17240, 23104)]