20098078720

素因数分解:

$2^{11}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{63313}}^1$

素因数の和:63371

約数の個数: 96

約数和(自身を含む): 49779999360

約数和(自身を除く): 29681920640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1024, 1240, 1280, 1984, 2048, 2480, 2560, 3968, 4960, 5120, 7936, 9920, 10240, 15872, 19840, 31744, 39680, 63313, 63488, 79360, 126626, 158720, 253252, 316565, 317440, 506504, 633130, 1013008, 1266260, 1962703, 2026016, 2532520, 3925406, 4052032, 5065040, 7850812, 8104064, 9813515, 10130080, 15701624, 16208128, 19627030, 20260160, 31403248, 32416256, 39254060, 40520320, 62806496, 64832512, 78508120, 81040640, 125612992, 129665024, 157016240, 162081280, 251225984, 314032480, 324162560, 502451968, 628064960, 648325120, 1004903936, 1256129920, 2009807872, 2512259840, 4019615744, 5024519680, 10049039360, 20098078720]

約数ペア:

[(1, 20098078720), (2, 10049039360), (4, 5024519680), (5, 4019615744), (8, 2512259840), (10, 2009807872), (16, 1256129920), (20, 1004903936), (31, 648325120), (32, 628064960), (40, 502451968), (62, 324162560), (64, 314032480), (80, 251225984), (124, 162081280), (128, 157016240), (155, 129665024), (160, 125612992), (248, 81040640), (256, 78508120), (310, 64832512), (320, 62806496), (496, 40520320), (512, 39254060), (620, 32416256), (640, 31403248), (992, 20260160), (1024, 19627030), (1240, 16208128), (1280, 15701624), (1984, 10130080), (2048, 9813515), (2480, 8104064), (2560, 7850812), (3968, 5065040), (4960, 4052032), (5120, 3925406), (7936, 2532520), (9920, 2026016), (10240, 1962703), (15872, 1266260), (19840, 1013008), (31744, 633130), (39680, 506504), (63313, 317440), (63488, 316565), (79360, 253252), (126626, 158720)]